1981 ES21
1981ES21, 1992 SP25, 1992SP25, 27686, J81E21S, J92S25P
All data for this body: [vot]
MPC data
| Name (number) |
1981 ES21 (27686) |
| a |
2.68108 |
| e |
0.16040 |
| i / sin(i) |
13.0201 /
0.22529
|
| q |
2.25103
|
| Q |
3.11113
|
| ω |
99.6817 |
| Node |
354.4793 |
| m |
84.0424 |
| n |
0.2245 |
| Epoch |
2460800.5 |
| nobs |
4060 |
| nopp |
20 |
| Years observed |
1932-2025 |
| rms |
0.59 |
Best values
|
Value |
Standard error |
| Parent |
Eunomia (15) |
|
| |
|
|
| ap |
2.681 |
|
| ep |
0.168 |
|
| sin(ip) |
0.234 |
|
| G |
0.150 |
|
| H |
14.110 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
10.590 |
| Period quality |
2 |
| Spectral Class |
S |
| Spectral Class Score |
2.976 |
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 15 |
Eunomia |
502 |
Eunomia |
0.3400 |
Nesvorny |
doi.org/10.26033/6cg5-pt13 |
HCM-2020-08-14 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.6807 |
0.1684 |
0.2340 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
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 |
| 14.11 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Periods
| Value |
Quality |
Side real or Synodic |
Author |
Reference |
Method |
| 10.5908 |
2 |
Synodic |
Pal |
2020ApJS..247...26P |
Lightcurve |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| S |
|
0.496 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |