1981 ER12
1981ER12, 35021, J81E12R
All data for this body: [vot]
MPC data
| Name (number) |
1981 ER12 (35021) |
| a |
3.08655 |
| e |
0.09900 |
| i / sin(i) |
11.1233 /
0.19292
|
| q |
2.78099
|
| Q |
3.39210
|
| ω |
244.3355 |
| Node |
338.8524 |
| m |
8.8159 |
| n |
0.1818 |
| Epoch |
2460800.5 |
| nobs |
845 |
| nopp |
22 |
| Years observed |
1981-2025 |
| rms |
0.83 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
3.088 |
|
| ep |
0.122 |
|
| sin(ip) |
0.206 |
|
| G |
0.150 |
|
| H |
14.850 |
|
| Mass |
|
|
| D |
4.11 |
1.432 |
| pV |
0.138 |
0.0697 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 3.0885 |
0.1222 |
0.2064 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 4.11 |
1.432 |
1.432 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.138 |
0.0697 |
0.0697 |
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 |
| 14.85 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |