1981 ET31
1981ET31, 1989 TN14, 1989TN14, 19945, 1999 RU138, 1999RU138, J81E31T, J89T14N, J99RD8U
All data for this body: [vot]
MPC data
| Name (number) |
1981 ET31 (19945) |
| a |
2.98863 |
| e |
0.23237 |
| i / sin(i) |
9.5597 /
0.16608
|
| q |
2.29416
|
| Q |
3.68310
|
| ω |
269.8223 |
| Node |
178.0790 |
| m |
260.7577 |
| n |
0.1908 |
| Epoch |
2460800.5 |
| nobs |
2074 |
| nopp |
23 |
| Years observed |
1981-2025 |
| rms |
0.75 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.990 |
|
| ep |
0.221 |
|
| sin(ip) |
0.175 |
|
| G |
0.150 |
|
| H |
14.170 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.9897 |
0.2211 |
0.1752 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
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 |
| 14.17 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |