1981 EM31
1981EM31, 14810, J81E31M
All data for this body: [vot]
MPC data
| Name (number) |
1981 EM31 (14810) |
| a |
2.40777 |
| e |
0.11085 |
| i / sin(i) |
1.3181 /
0.02300
|
| q |
2.14087
|
| Q |
2.67468
|
| ω |
141.6593 |
| Node |
162.3047 |
| m |
180.6334 |
| n |
0.2638 |
| Epoch |
2460800.5 |
| nobs |
1581 |
| nopp |
24 |
| Years observed |
1978-2025 |
| rms |
0.80 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.407 |
|
| ep |
0.090 |
|
| sin(ip) |
0.024 |
|
| G |
0.150 |
|
| H |
15.810 |
|
| Mass |
|
|
| D |
4.18 |
0.267 |
| pV |
0.070 |
0.0283 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.4074 |
0.0896 |
0.0236 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 4.18 |
0.267 |
0.267 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.070 |
0.0283 |
0.0283 |
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 |
| 15.81 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |