2008 HG21
2008HG21, 2012 HE39, 2012HE39, f4270, K08H21G, K12H39E
All data for this body: [vot]
MPC data
| Name (number) |
2008 HG21 (414270) |
| a |
2.59645 |
| e |
0.20110 |
| i / sin(i) |
26.6502 /
0.44854
|
| q |
2.07431
|
| Q |
3.11859
|
| ω |
326.8569 |
| Node |
222.0294 |
| m |
51.7359 |
| n |
0.2356 |
| Epoch |
2460800.5 |
| nobs |
207 |
| nopp |
10 |
| Years observed |
2008-2025 |
| rms |
0.93 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.599 |
|
| ep |
0.265 |
|
| sin(ip) |
0.442 |
|
| G |
0.150 |
|
| H |
16.390 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
S |
| Spectral Class Score |
2.490 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.5985 |
0.2647 |
0.4419 |
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 |
| 16.39 |
|
|
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 |
| S |
|
0.415 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |
| V |
V |
0.0760 |
0.0910 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |
| V |
V |
0.1212 |
0.0910 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |