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Sgr A sagitterius A* http://forum.celestialmatters.org/viewtopic.php?f=2&t=901 |
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Author: | symaski62 [ Wed, 12-04-17, 8:03 GMT ] |
Post subject: | Sgr A sagitterius A* |
https://en.wikipedia.org/wiki/Sagittarius_A* ![]() |
Author: | symaski62 [ Thu, 13-04-17, 20:20 GMT ] |
Post subject: | Re: Sgr A sagitterius A* |
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Author: | symaski62 [ Fri, 14-04-17, 8:05 GMT ] |
Post subject: | Re: Sgr A sagitterius A* |
Code: #http://orbitsimulator.com/formulas/sma.html
#https://en.wikipedia.org/wiki/Sagittarius_A #https://en.wikipedia.org/wiki/Sagittarius_A* "sgr A:Sagittarius A" { RA 266.404167 Dec -28.936111 Distance 27720.000000 AppMag 25 SpectralType "?" Radius 44000000 #black Hole (63 R_sun) mass 4060000 #M_Sun } Barycenter "Sagittarius A" { RA 266.404167 Dec -28.936111 Distance 27720.000000 } "S1" { OrbitBarycenter "Sagittarius A" SpectralType "?" AppMag 25.445 EllipticalOrbit { Epoch 2452463.7 #2002.6 Period 94.1 SemiMajorAxis 3300.4241578113324 Eccentricity 0.358 Inclination 120.5 AscendingNode 341.500 ArgOfPericenter 129.800 MeanAnomaly 0.000 } } "S2" { OrbitBarycenter "Sagittarius A" SpectralType "?" AppMag 25.445 EllipticalOrbit { Epoch 2452359.105 Period 15.24 SemiMajorAxis 980.6182835483514 Eccentricity 0.8760 Inclination 131.9 AscendingNode 221.9 ArgOfPericenter 62.6 MeanAnomaly 0.000 } } "S8" { OrbitBarycenter "Sagittarius A" SpectralType "?" AppMag 25.445 EllipticalOrbit { Epoch 2447025.07 Period 67.2 SemiMajorAxis 2636.8748847113447 Eccentricity 0.927 Inclination 60.6 AscendingNode 141.4 ArgOfPericenter 159.2 MeanAnomaly 0.000 } } "S12" { OrbitBarycenter "Sagittarius A" SpectralType "?" AppMag 25.445 EllipticalOrbit { Epoch 2449916.976 Period 54.4 SemiMajorAxis 2290.389134967171 Eccentricity 0.9020 Inclination 32.8 AscendingNode 233.3 ArgOfPericenter 311.8 MeanAnomaly 0.000 } } "S13" { OrbitBarycenter "Sagittarius A" SpectralType "?" AppMag 25.445 EllipticalOrbit { Epoch 2453742.2 Period 36 SemiMajorAxis 1739.3153998781474 Eccentricity 0.395 Inclination 11 AscendingNode 100 ArgOfPericenter 250 MeanAnomaly 0.000 } } "S14" { OrbitBarycenter "Sagittarius A" SpectralType "?" AppMag 25.445 EllipticalOrbit { Epoch 2451570.752 Period 38 SemiMajorAxis 1803.1522831560787 Eccentricity 0.9389 Inclination 97.3 AscendingNode 228.5 ArgOfPericenter 344.7 MeanAnomaly 0.000 } } |
Author: | t00fri [ Sun, 16-04-17, 7:39 GMT ] |
Post subject: | Re: Sgr A sagitterius A* |
It would be very useful to also display --besides the Wiki reference-- the links to the original scientific papers (2005) for the above orbital parameters: http://iopscience.iop.org/article/10.1086/427175/pdf http://iopscience.iop.org/article/10.1086/430667/pdf I remember that essentially the complete set of required orbital parameters may be found in there (A. M. Ghez et al., F. Eisenhauer et al.) Thanks, Fridger |
Author: | symaski62 [ Mon, 17-04-17, 9:04 GMT ] | ||
Post subject: | Re: Sgr A sagitterius A* | ||
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Author: | t00fri [ Mon, 17-04-17, 9:17 GMT ] |
Post subject: | Re: Sgr A sagitterius A* |
Right, that's how I remember this marvelous view from when the original papers appeared in 2005. Fridger |
Author: | symaski62 [ Mon, 17-04-17, 9:59 GMT ] |
Post subject: | Re: Sgr A sagitterius A* |
t00fri wrote: It would be very useful to also display --besides the Wiki reference-- the links to the original scientific papers (2005) for the above orbital parameters: http://iopscience.iop.org/article/10.1086/427175/pdf => Receivved 2003 June 5; accepted 2004 October 29 http://iopscience.iop.org/article/10.1086/430667/pdf => Received 2005 February 6; accepted 2005 March 15 I remember that essentially the complete set of required orbital parameters may be found in there (A. M. Ghez et al., F. Eisenhauer et al.) Thanks, Fridger ![]() yes, mass 4060000 M_Sun = 4.06e6 M_Sun http://orbitsimulator.com/formulas/sma.html |
Author: | symaski62 [ Mon, 17-04-17, 13:22 GMT ] | ||
Post subject: | Re: Sgr A sagitterius A* | ||
M0 = 4.06e6 M_Sun #black hole ![]()
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Author: | t00fri [ Mon, 17-04-17, 17:53 GMT ] |
Post subject: | Re: Sgr A sagitterius A* |
symaski62 wrote: M0 = 4.06e6 M_Sun #black hole [By all means click on image] Attachment: ![]() Yes that's what I recalled, whence we can do a nice .stc file for the system... When the orbital data became available around 2005, I made an add-on, but forgot where I made it public. For sure not in the Motherlode, hence presumably in the shatters.net forum, since the CelestialMatters forum did not yet exist;-) Fridger |
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