1981 EJ27
1981EJ27, 42474, J81E27J
All data for this body: [vot]
MPC data
| Name (number) |
1981 EJ27 (42474) |
| a |
2.27694 |
| e |
0.19693 |
| i / sin(i) |
0.7462 /
0.01302
|
| q |
1.82854
|
| Q |
2.72534
|
| ω |
322.0698 |
| Node |
282.2100 |
| m |
260.2726 |
| n |
0.2869 |
| Epoch |
2460800.5 |
| nobs |
1085 |
| nopp |
23 |
| Years observed |
1981-2025 |
| rms |
0.85 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.276 |
|
| ep |
0.209 |
|
| sin(ip) |
0.030 |
|
| G |
0.150 |
|
| H |
16.500 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
13.600 |
| Period quality |
1 |
| Spectral Class |
S |
| Spectral Class Score |
1.147 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.2761 |
0.2092 |
0.0300 |
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 |
| 16.50 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Periods
| Value |
Quality |
Side real or Synodic |
Author |
Reference |
Method |
| 6.81 |
1 |
Synodic |
Chang |
2016ApJS..227...20C |
Lightcurve |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| S |
S |
0.1912 |
0.1912 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |