1991 AC
1991AC, 07821, 1989 SA4, 1989SA4, 1992 GT7, 1992GT7, J89S04A, J91A00C, J92G07T
All data for this body: [vot]
MPC data
| Name (number) |
1991 AC (7821) |
| a |
2.88756 |
| e |
0.01575 |
| i / sin(i) |
2.8783 /
0.05022
|
| q |
2.84208
|
| Q |
2.93305
|
| ω |
67.3220 |
| Node |
57.8167 |
| m |
225.7180 |
| n |
0.2009 |
| Epoch |
2460200.5 |
| nobs |
3541 |
| nopp |
26 |
| Years observed |
1989-2023 |
| rms |
0.56 |
Best values
|
Value |
Standard error |
| Parent |
Koronis (158) |
|
| |
|
|
| ap |
2.888 |
|
| ep |
0.046 |
|
| sin(ip) |
0.037 |
|
|
Value |
Standard error |
| G |
0.150 |
|
| H |
13.090 |
|
| Mass |
|
|
| D |
7.10 |
0.201 |
| pV |
0.266 |
0.0434 |
| Rotational Period |
|
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 158 |
Koronis |
605 |
Koronis |
0.2000 |
Nesvorny |
doi.org/10.26033/6cg5-pt13 |
HCM-2020-08-14 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.8884 |
0.0460 |
0.0368 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Oct-2022 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 7.10 |
0.201 |
0.201 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.266 |
0.0434 |
0.0434 |
Masiero |
2011ApJ...741...68M |
NEATM |
G data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.15 |
|
|
MPC-2023-12-94 |
MPC-2023-12-94 |
Phot |
H data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 13.09 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |