1981 EJ12
1981EJ12, 35020, J81E12J
All data for this body: [vot]
MPC data
| Name (number) |
1981 EJ12 (35020) |
| a |
3.05857 |
| e |
0.12970 |
| i / sin(i) |
4.0088 /
0.06991
|
| q |
2.66187
|
| Q |
3.45528
|
| ω |
302.0598 |
| Node |
271.5589 |
| m |
58.5953 |
| n |
0.1843 |
| Epoch |
2460800.5 |
| nobs |
996 |
| nopp |
23 |
| Years observed |
1981-2025 |
| rms |
0.85 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
3.061 |
|
| ep |
0.159 |
|
| sin(ip) |
0.093 |
|
| G |
0.150 |
|
| H |
15.070 |
|
| Mass |
|
|
| D |
5.68 |
0.228 |
| pV |
0.079 |
0.0210 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
B |
| Spectral Class Score |
1.444 |
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 10 |
Hygiea |
0 |
Hygiea |
|
Novakovic |
2019EPSC...13.1671N |
HCM |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 3.0606 |
0.1592 |
0.0935 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 5.68 |
0.228 |
0.228 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.079 |
0.0210 |
0.0210 |
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 |
| 15.07 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| B |
B |
0.2406 |
0.2406 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |
| C |
|
0.18 |
|
Bus |
VIS |
Carvano |
2010A&A...510A..43C |
PHOT |