It is currently Sat, 21-10-17, 1:14 GMT

All times are UTC




Post new topic Reply to topic  [ 11 posts ] 
Author Message
 Post subject: Asteroids
PostPosted: Sat, 15-02-14, 21:57 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
There are a bunch with published SPICE orbits
ftp://naif.jpl.nasa.gov/pub/naif/generi ... asteroids/
"codes_300ast_20100725.bsp" is from 2010
for a list of covered objects
ftp://naif.jpl.nasa.gov/pub/naif/generi ... maries.txt

############################

### Steins ###

You will notice that "2000021 LUTETIA*" is listed in "codes_300ast_20100725.bsp"
but
Not Steins object #"2002867"

for that use the HORIZONS "telnet" interface ( or the gzip on the g-drive link)
viewtopic.php?f=18&t=577#p10830
Code:
telnet ssd.jpl.nasa.gov 6775


grab the steins.xfr > then use "tobin" to convert it is a bsp

now for the mesh :
There is the original shape file ( mostly it is 90x46 and not 73x37 points and has been rotated to 0 lat/long in the center )
viewtopic.php?f=18&t=626

the one i am using is a edited version ( in the gzip on the g-drive link)
added craters from the two " good " images and added FBM noise to the DEM

Image Image Image Image Image

the ssc file
Code:

"Steins-2867" "Sol"

{
  Class "asteroid"
  Mesh    "Steins.bin.cmod"
# Texture ""       # coded into the cmod
Orientation [ 90 1 0 0 ]
  Radius               4.47
  Albedo               0.34

  OrbitFrame { EclipticJ2000 { Center "Sol" }}

  Beginning  "1900 01 01 00:00:00.000"
  Ending     "2101 01 01 00:00:00.000"

  SpiceOrbit
  {
    Kernel "Stiens.bsp"
    Target "2002867"
    Origin "10"
    Period  3
    BoundingRadius 1e10
  }
  PrecessingRotation  # this needs to be set  to the Rosetta flyby
  {
    Inclination        40      # random
    AscendingNode      5       # random
    Period             10      # random
    PrecessionPeriod   0.01     # random
  }
}




   Location "Topaz" "Sol/Steins-2867"
   {
     LongLat [ 0.0 -7.7 -0.12 ]
     Size 1
     Importance  5.0
     Type "AA"
   }


locations do not work well on a mesh , far from well .
so i only put ONE point


the drop in add on
Steins.tar.gz -- 17.8 Mib
https://drive.google.com/file/d/0B6ZYAd ... sp=sharing

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: Asteroids
PostPosted: Tue, 01-04-14, 20:13 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
Asteroid 52760

this is in HORIZONS
Code:
telnet horizons.jpl.nasa.gov 6775

hit <enter>
Code:
JPL Horizons, version 3.87
Type `?' for brief intro, `?!' for more details
System news updated Mar 10, 2014
 
Horizons>

type in 52760
Code:

JPL Horizons, version 3.87
Type `?' for brief intro, `?!' for more details
System news updated Mar 10, 2014
 
Horizons> 52760
*******************************************************************************
JPL/HORIZONS                  52760 (1998 ML14)            2014-Apr-01 12:53:39
Rec #: 52760 (+COV)   Soln.date: 2014-Mar-22_11:55:06    # obs: 588 (1998-2014)
 
FK5/J2000.0 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs):
 
  EPOCH=  2455411.5 ! 2010-Aug-03.00 (CT)          Residual RMS= .39079       
   EC= .6206403612479247   QR= .9146906665047532   TP= 2455181.8787248693     
   OM= 338.9157132506253   W=  20.12108463944722   IN= 2.433080268528047       
   A= 2.411143867369969    MA= 60.44794087990935   ADIST= 3.907597068235185   
   PER= 3.74406            N= .263250603           ANGMOM= .020944109         
   DAN= .93658             DDN= 3.55285            L= 359.0201117             
   B= .8367706             MOID= .0157662          TP= 2009-Dec-16.3787248693 
 
Asteroid physical parameters (km, seconds, rotational period in hours):       
   GM= n.a.                RAD= .500               ROTPER= 14.98               
   H= 17.5                 G= .150                 B-V= n.a.                   
                           ALBEDO= n.a.            STYP= n.a.                 
 
ASTEROID comments:
1: soln ref.= JPL#127, PHA  OCC=0       radar(11 delay, 7 Dop.)
2: source=ORB
*******************************************************************************
 Select ... [A]pproaches, [E]phemeris, [F]tp,[M]ail,[R]edisplay, [S]PK,?,<cr>:

you need the SPK , so type in < s > and hit < enter >

Code:

 Searching for SPK object ID number ...   found.
 Assigned SPK object ID:  2052760
 
 Enter your Internet e-mail address [?]:


type in your address , and confirm the challenge with "yes " < y >
Code:
SPK text transfer format  [ YES, NO, ? ] :

yes you want the xfr ( and use "tobin" in cspice on YOUR operating system )
Code:
SPK object START [ t >= 1900-Jan-01, ? ] :

you want the full range so use that start date
Type in 1900-Jan-01 and hit < enter >
Code:
SPK object STOP  [ t <= 2101-Jan-01, ? ] :

SPK object STOP [ t <= 2101-Jan-01, ? ] :
you want the full range so type in
2101-Jan-01 and hit < enter >
Code:

 Current integration step:
  2415152.88740  1900 May 13.38740    -1.0328378
 Current integration step:
  2488282.19109  2100 Aug 01.69109     1.2290876
 
 Binary SPK file created.
 Add more objects to file  [ YES, NO, ? ] :

say NO -- < n > and hit < enter >
Code:
 Converting SPK to portable transfer format .... standby 
 After FTP transfer, convert file back to binary form.
 
 You have 30 minutes to retrieve the following by anonymous FTP:
   Machine name:  ssd.jpl.nasa.gov
   Directory   :  cd to "/pub/ssd/"
   File name   :  wld10805.15
   File type   :  ASCII (transfer format)
   Full path   :  ftp://ssd.jpl.nasa.gov/pub/ssd/wld?????.15
 
 Select ... [E]phemeris, [M]ail, [R]edisplay, ?, <cr>:

the text based kernel is at this ftp address
"ftp://ssd.jpl.nasa.gov/pub/ssd/wld?????.15"
( the ?????? is a unique identifier for the file )
most web browsers have NO problems in using FTP for download
that address IS the text kernel
so use "Save page AS!!! "
and save it as
52760.xfr

oruse wget or ftp or curl, or your favorite tool to save the link

then run "tobin on it
Code:
cd /to the /location/you /saved /the/file
tobin 52762.xfr 52762.bsp

and copy the 2.7 Meg. binary file to the "data" folder in the add on

the ssc should look something like this
Code:

"52760" "Sol"

{
  Class "asteroid"
  Mesh    "52760.bin.cmod"   # this is MY testing mesh , use what you want
# Texture ""       # coded into the cmod
  Orientation [ 90 1 0 0 ]
  Radius               0.5    # approx. it is about 1 KM in diameter
  Albedo               0.34   # random needs to be refined still

  OrbitFrame { EclipticJ2000 { Center "Sol" }}

  Beginning  "1900 01 01 00:00:00.000"
  Ending     "2101 01 01 00:00:00.000"

  SpiceOrbit
  {
    Kernel "52760.bsp"
    Target "2052760"
    Origin "10"
    Period  4
    BoundingRadius 1e10
  }
  PrecessingRotation
  {
    Inclination        20      # random
    AscendingNode      1       # random
    Period             14.98    # JPL Small-Body Database
    PrecessionPeriod   0.02     # random
  }
}



Image Image

drop in add on
reuploaded to fix bug ( z axis off by -90 deg)
52760.tar.gz - 15.5 Meg
( cmod,bsp,ssc,2k texture,4k normalmap )

https://drive.google.com/file/d/0B6ZYAd ... sp=sharing
or
use the original in the "shape model " thread
viewtopic.php?f=4&t=636

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: Asteroids
PostPosted: Sun, 08-06-14, 4:01 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
--- /* 2014 HQ124 */ ---
there is a near Earth ( well 3.5 times the distance to the Moon ) zipping by tomorrow

http://www.space.com/26129-beast-astero ... bcast.html
Image Image Image Image

2014_HQ124.tar.gz - 6.6 Meg

https://drive.google.com/file/d/0B6ZYAd ... sp=sharing

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: Asteroids
PostPosted: Sat, 14-06-14, 1:37 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
well i will have to update the mesh
Image
"Radar Observations of Asteroid 2014 HQ124"
http://www.jpl.nasa.gov/spaceimages/det ... d=PIA18412
http://photojournal.jpl.nasa.gov/catalog/PIA18412
--video--
http://www.jpl.nasa.gov/video/index.php?id=1310

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: Asteroids
PostPosted: Thu, 14-08-14, 2:00 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
in the mean time before hand carving a new mesh for HQ124

The DAWN teem updated the released data
http://dawndata.igpp.ucla.edu/tw.jsp?section=data

So a NEW Vesta mesh texture and normal map
the OLD data set had a lot of the northpole missing .
The new data has much MORE of the northpole .

2k copies
Image Image
the DEM ( height map and now mesh and normal )
http://dawndata.igpp.ucla.edu/tw.jsp?se ... 2013_02_13
the DTM ( texture )
http://dawndata.igpp.ucla.edu/tw.jsp?se ... R_HAMO_DTM

now Vesta is in the HORIZONS database
so telnet in as in the above posts and other posts
grab the spk ( text tile) transfer file for Vesta run "tobin" on it
Code:
 
BRIEF -- Version 3.0.0, January 14, 2008 -- Toolkit Version N0064
 
 
Summary for: Vesta.bsp
 
Body: VESTA (2000004) w.r.t. SUN (10)
      Start of Interval (ET)              End of Interval (ET)
      -----------------------------       -----------------------------
      1900 JAN 01 00:00:00.000            2101 JAN 01 00:00:00.000
 


you will also need , depending on HOW one installs this a copy of :
"pck00010.tpc"
"naif0010.tls"
in the vesta/data folder ( same folder that Vesta.bsp is in )

then the ssc file
Vesta IS in the small bodies ssc so "replace" is needed
Code:

Replace "4 Vesta:Vesta" "Sol"

{
  Class "asteroid"
  Mesh    "Vesta.low.bin.cmod"
  # Texture ""       # coded into the cmod
  # NormapMap ""     # coded into the cmod
  Orientation [ 90 1 0 0 ] # did NOT rotate it on export to cmod
  Radius               525
  Albedo               0.2  # guess, a bit random

  OrbitFrame { EclipticJ2000 { Center "Sol" }}

  Beginning  "1900 01 01 00:00:00.000"
  Ending     "2101 01 01 00:00:00.000"

  SpiceOrbit
  {
    Kernel  "Vesta.bsp"
    Target "2000004"
    Origin "10"
    Period  3.63
    BoundingRadius 1e10
  }
     SpiceRotation
    {
      Kernel          [   "pck00010.tpc"  "naif0010.tls"  ]
      Frame               "IAU_VESTA"
    }
}


a screenshot of the low,med ,and hi res mesh
Image Image Image


a drop-in low res mesh and texture add on is here on my G-drive
Vesta.low.zip - 7.3 Meg
https://googledrive.com/host/0B6ZYAd08t ... ta.low.zip
2k texture and Normalmap and 3.5 Meg mesh

then a med res and HI res mesh and texture ONLY zip files are here
4k medium res texture and mesh
https://drive.google.com/file/d/0B6ZYAd ... sp=sharing
4k texture and normal
and a 14.3 meg mesh

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: Asteroids
PostPosted: Mon, 16-02-15, 1:01 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
the jpl naif ftp site added a asteroid bsp last December ( 12-2-2014))

ftp://ssd.jpl.nasa.gov/pub/eph/small_bo ... ids_de430/

it lists 343 bodies

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Ceres
PostPosted: Thu, 05-03-15, 21:57 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
---- edit
i fixed the error with the rotation




The Dawn team released a very early lowres map
http://dawn.jpl.nasa.gov/multimedia/Cra ... _Ceres.asp
-- png image --
Image
This map is 0 to 360 , the second bright spot is at +240 long + 20 lat the first one is split in two at 0 and 360

so the map will need to be offset by 180 Degrees

this Asteroid is in the BIG 1.1 Gig "ast343de430.bsp"

However the Dawn team has a Ceres only kernel
posted on (11/25/2014) but created on ( 07/24/14))
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/kernels/spk/
"sb_ceres_140724.bsp"
( or use the HORIZONS telnet )


the rotation model will need the "dawn_ceres_v02.tpc"
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/kernels/pck

and the body frame ( early version)"dawn_ceres_v00.tf"
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/kernels/fk/


and the current leap second "naif0011.tls"
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/kernels/lsk/

Code:
Replace "1 Ceres:Ceres:A899 OF" "Sol"
{
   Class "dwarfplanet"
   Texture "pia18923-ceresmap_lg.png"
   Color [ 1.000 0.945 0.881 ]
   BlendTexture true
        SemiAxes [ 487.3 487.3 454.7 ] # from dawn_ceres_v02.tpc

    OrbitFrame { EclipticJ2000 { Center "Sol" }}
    BodyFrame  { EclipticJ2000 { Center "Sol" }}

    Beginning  "2012 02 01 00:00:00.000"
    Ending   "2200 02 12 00:00:00.000"       # minus 1 month for drawing orbit
    SpiceOrbit
    {
      Kernel  "sb_ceres_140724.bsp"
      Target  "2000001"
      Origin  "10"
      Period  4.6
      BoundingRadius 1e10
    }

     SpiceRotation
    {
       Kernel           [  "dawn_ceres_v02.tpc"  "dawn_ceres_v00.tf" "naif0011.tls"  ]
       Frame               "CERES_FIXED"
     }

   Albedo 0.113
}




and the folder layout for the folder "Ceres"
Code:
.
├── Ceres.ssc
├── data
│   ├── dawn_ceres_v02.tpc
     ├── dawn_ceres_v00.tf
│   ├── naif0011.tls
│   └── sb_ceres_140724.bsp
└── textures
    └── medres
        └── pia18923-ceresmap_lg.png




-- fixed

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: Ceres
PostPosted: Sun, 08-03-15, 10:54 GMT 
Offline

Joined: Thu, 21-08-14, 10:13 GMT
Posts: 8
John Van Vliet wrote:
---- edit
i fixed the error with the rotation




The Dawn team released a very early lowres map
http://dawn.jpl.nasa.gov/multimedia/Cra ... _Ceres.asp
-- png image --
Image

( at this time i do not know if that map is 0 to 360 or -180 to +180 --- BUT being the USA and we do EVERYTHING different from the rest of the WORLD i am GUESSING 0 to 360 )
so the map will need to be offset by 180 Degrees

this Asteroid is in the BIG 1.1 Gig "ast343de430.bsp"

However the Dawn team has a Ceres only kernel
posted on (11/25/2014) but created on ( 07/24/14))
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/kernels/spk/
"sb_ceres_140724.bsp"
( or use the HORIZONS telnet )


the rotation model will need the "dawn_ceres_v02.tpc"
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/kernels/pck

and the body frame ( early version)"dawn_ceres_v00.tf"
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/kernels/fk/


and the current leap second "naif0011.tls"
ftp://naif.jpl.nasa.gov/pub/naif/DAWN/kernels/lsk/

Code:
Replace "1 Ceres:Ceres:A899 OF" "Sol"
{
   Class "dwarfplanet"
   Texture "pia18923-ceresmap_lg.png"
   Color [ 1.000 0.945 0.881 ]
   BlendTexture true
        SemiAxes [ 487.3 487.3 454.7 ] # from dawn_ceres_v02.tpc

    OrbitFrame { EclipticJ2000 { Center "Sol" }}
    BodyFrame  { EclipticJ2000 { Center "Sol" }}

    Beginning  "2012 02 01 00:00:00.000"
    Ending   "2200 02 12 00:00:00.000"       # minus 1 month for drawing orbit
    SpiceOrbit
    {
      Kernel  "sb_ceres_140724.bsp"
      Target  "2000001"
      Origin  "10"
      Period  4.6
      BoundingRadius 1e10
    }

     SpiceRotation
    {
       Kernel           [  "dawn_ceres_v02.tpc"  "dawn_ceres_v00.tf" "naif0011.tls"  ]
       Frame               "CERES_FIXED"
     }

   Albedo 0.113
}




and the folder layout for the folder "Ceres"
Code:
.
├── Ceres.ssc
├── data
│   ├── dawn_ceres_v02.tpc
     ├── dawn_ceres_v00.tf
│   ├── naif0011.tls
│   └── sb_ceres_140724.bsp
└── textures
    └── medres
        └── pia18923-ceresmap_lg.png




-- fixed



Thank you. I just added this kernels :) Works fine.


Top
 Profile  
 
 Post subject: Re: Asteroids
PostPosted: Fri, 03-07-15, 21:31 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
Near Earth Asteroid Bennu / 101955bennu / 1999 RQ36
Image Image

feel free to use HORIZONS "telnet" for a "Bennu.xfr" then use "tobin" to make a bsp file but that is included


a unaltered mesh in in the "shape model" thread
viewtopic.php?f=4&t=636#p13291

This spice add on uses a bit bigger mesh and a normal map ( added synthetic noise and craters )
Code:
 "Bennu:101955bennu:1999 RQ36" "Sol"
{
  Class "asteroid"
  Mesh    "Bennu.bin.cmod"
  Orientation [ 90 1 0 0 ] # did NOT rotate it on export to cmod
  Radius               0.25
  Albedo               0.09

  OrbitFrame { EclipticJ2000 { Center "Sol" }}

  Beginning  "1900 01 01 00:00:00.000"
  Ending     "2101 01 01 00:00:00.000"

  SpiceOrbit
  {
    Kernel "Bennu.bsp"
    Target "2101955"
    Origin "10"
    Period  1.1
    BoundingRadius 1e10
  }
   PrecessingRotation
  {
    Inclination        5        # random
    AscendingNode      45       # random
    Period             4.29746  # measured by  Arecibo
    PrecessionPeriod   0.01     # random
  }
}




a 16.4 Meg binary cmod
a 4k texture and Normalmap
Image Image

"Bennu.SPICE.zip" 34.4 Meg
https://drive.google.com/file/d/0B6ZYAd ... sp=sharing


.

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: Asteroids
PostPosted: Sat, 04-07-15, 20:29 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
just having fun


Image Image
Image Image

but about 1 / 2 the family is "over the river " ( from Detroit)
Image Image

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
 Post subject: Re: Asteroids
PostPosted: Thu, 16-06-16, 0:02 GMT 
Offline
User avatar

Joined: Tue, 04-09-07, 21:55 GMT
Posts: 767
Location: N 42.38846 W 83.45456
a NASA announcement
http://www.jpl.nasa.gov/news/news.php?release=2016-154

ast 2016 H03


short ssc and a spice kernel , 2 4k textures ,and a 10 meg cmod

2016H03.medres.zip 22.7 MiB
https://drive.google.com/file/d/0B6ZYAd ... sp=sharing


see this thread for screenshots
viewtopic.php?f=4&t=845

_________________
"I don't pitch Linux to my friends, I let Microsoft do that for me."
Using OpenSUSE 42.1 & Scientific Linux 6.7


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 11 posts ] 

All times are UTC


Who is online

Users browsing this forum: Bing [Bot] and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group