discov_num |
notes |
refcode |
Sgr A* |
Semimajor axis in mpc was converted to arcseconds based on a quoted |
Eck2002 |
|
distance of 8 kpc. Errors for Eck2002 orbits are as follows: |
Sel2002 |
|
|
Ghe2003 |
|
Element Sgr A* - S1 Sgr A* - S2 Sgr A* - S8 |
Sel2003 |
|
---------------------------------------------------------------------- |
|
|
P (yr) 100. +184/-54 19.4 +7.4/-3.0 57. +1060/-0 |
|
|
a (mpc) 18. +18./-8. 5.6 +0.7/-1.1 10. +48./-0. |
|
|
a (arcsec) 0.46 +0.46/-0.21 0.14 +0.02/-0.03 0.26 +1.24/-0.00 |
|
|
i (deg) 60. +/-5. 70. +6./-17. 0. +/-70. |
|
|
Omega (deg) -14. +7./-12. 23. +27./-11. -65.: |
|
|
T (by) 2097 +281/-96 2002.6 +6.8/-22. 2043 +1060/-0 |
|
|
e 0.6 +/-0.3 0.8 +0.15/-0.40 0.95 +0./-0.12 |
|
|
omega (deg) 190. +120/-10 190. +/-10. -55. +32/-0 |
|
|
---------------------------------------------------------------------- |
|
|
Note: This system has grown more complex as additional stars orbiting |
|
|
the Galactic Center have been observed. With the number of companions |
|
|
now exceeding 170, it has become increasingly difficult to maintain |
|
|
the usual WDS designation/component scheme. All WDS pairs were |
|
|
therefore copied to the WDSS (WDS supplemental catalog) in July 2017; |
|
|
henceforth the standard published designations for Sgr A* companions |
|
|
will be used for all components. |
|
refcode |
metd |
author |
reference |
Eck2002 |
Si - |
Eckart, A., Genzel, R., Ott, T., & Schoedel, R. |
2002MNRAS.331..917E |
Eck2002 |
+S |
MNRAS 331, 917, 2002 |
|
Eck2002 |
+orb |
(NTT 3.5m + SHARP speckle, Keck 9.8m + NIRC IR camera) |
|
Ghe2003 |
orb - |
Ghez, A.M., Duchene, G., Matthews, K., Hornstein, S.D., Tanner, A., Larkin, J., |
2003ApJ...586L.127G |
Ghe2003 |
|
Morris, M., Becklin, E.E., et al. |
|
Ghe2003 |
|
ApJ 586, L127, 2003 |
|
Sel2002 |
orb - |
Schodel, R., Ott, T., Genzel, R., Hofmann, R., Lehnert, M., Eckart, A., |
2002Natur.419..694S |
Sel2002 |
|
Mouawad, N., Alexander, T., Reid, M., Lenzen, R., Hartung, M., Lacombe, F., et al. |
|
Sel2002 |
|
Nature 419, 694, 2002 |
|
Sel2003 |
orb - |
Schodel, R., Ott, T., Genzel, R., Eckart, A., Mouawad, N., & Alexander, T. |
2003ApJ...596.1015S |
Sel2003 |
+A |
ApJ 596, 1015, 2003 |
|
idgroup |
discov |
author |
1 |
GEN |
Genzel, R., Pichon, C., Eckart, A., Gerhard, O.E., & Ott, T. |
2 |
GEN |
Genzel, R., Schoedel, R., Ott, T., Eisenhauer, F., Hofmann, R., Lehnert, M., |
2 |
GEN |
Eckart, A., Alexander, T., et al. |
3 |
S |
South, J. |