1981 EJ8
1981EJ8, 1997 GQ44, 1997GQ44, 37542, J81E08J, J97G44Q
All data for this body: [vot]
MPC data
| Name (number) |
1981 EJ8 (37542) |
| a |
3.02837 |
| e |
0.16389 |
| i / sin(i) |
2.9013 /
0.05062
|
| q |
2.53205
|
| Q |
3.52468
|
| ω |
237.9096 |
| Node |
247.6029 |
| m |
171.6707 |
| n |
0.1870 |
| Epoch |
2460800.5 |
| nobs |
1183 |
| nopp |
20 |
| Years observed |
1981-2025 |
| rms |
0.78 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
3.029 |
|
| ep |
0.186 |
|
| sin(ip) |
0.079 |
|
| G |
0.150 |
|
| H |
15.180 |
|
| Mass |
|
|
| D |
5.44 |
1.400 |
| pV |
0.060 |
0.0383 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
Ds |
| Spectral Class Score |
1.000 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 3.0290 |
0.1860 |
0.0790 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 5.44 |
1.400 |
1.400 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.060 |
0.0383 |
0.0383 |
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 |
| 15.18 |
|
|
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 |
| C |
C |
0.1608 |
0.1608 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |
| Ds |
Ad |
None |
None |
Movis |
NIR |
Popescu |
2018A&A...617A..12P |
PHOT |