1997 GC21
1997GC21, 1999 TK137, 1999TK137, 96331, J97G21C, J99TD7K
All data for this body: [vot]
MPC data
| Name (number) |
1997 GC21 (96331) |
| a |
2.72202 |
| e |
0.09831 |
| i / sin(i) |
4.8477 /
0.08451
|
| q |
2.45441
|
| Q |
2.98963
|
| ω |
148.5042 |
| Node |
4.8831 |
| m |
351.2636 |
| n |
0.2195 |
| Epoch |
2460200.5 |
| nobs |
706 |
| nopp |
16 |
| Years observed |
1997-2022 |
| rms |
0.71 |
Best values
|
Value |
Standard error |
| Parent |
Merxia (808) |
|
| |
|
|
| ap |
2.723 |
|
| ep |
0.134 |
|
| sin(ip) |
0.086 |
|
|
Value |
Standard error |
| G |
0.150 |
|
| H |
15.830 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
| Rotational Period |
|
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 808 |
Merxia |
513 |
Merxia |
-0.6000 |
Nesvorny |
doi.org/10.26033/6cg5-pt13 |
HCM-2020-08-14 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.7232 |
0.1342 |
0.0859 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Oct-2022 |
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 |
| 15.83 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |