1981 ER8
1981ER8, 1998 FA109, 1998FA109, 37543, J81E08R, J98FA9A
All data for this body: [vot]
MPC data
| Name (number) |
1981 ER8 (37543) |
| a |
2.60991 |
| e |
0.11805 |
| i / sin(i) |
4.5255 /
0.07890
|
| q |
2.30181
|
| Q |
2.91800
|
| ω |
157.3953 |
| Node |
319.0131 |
| m |
214.0366 |
| n |
0.2338 |
| Epoch |
2460800.5 |
| nobs |
1129 |
| nopp |
20 |
| Years observed |
1979-2025 |
| rms |
0.79 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.611 |
|
| ep |
0.171 |
|
| sin(ip) |
0.091 |
|
| G |
0.150 |
|
| H |
15.690 |
|
| Mass |
|
|
| D |
4.10 |
0.085 |
| pV |
0.080 |
0.0139 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
S |
| Spectral Class Score |
1.623 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.6109 |
0.1711 |
0.0912 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 4.10 |
0.085 |
0.085 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.080 |
0.0139 |
0.0139 |
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 |
| 15.69 |
|
|
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 |
S |
0.2572 |
0.1690 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |
| S |
S |
0.2705 |
0.1690 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |