2009 HJ81
2009HJ81, h6028, K09H81J
All data for this body: [vot]
MPC data
| Name (number) |
2009 HJ81 (436028) |
| a |
3.18584 |
| e |
0.22809 |
| i / sin(i) |
30.0942 /
0.50143
|
| q |
2.45919
|
| Q |
3.91249
|
| ω |
31.4036 |
| Node |
122.0736 |
| m |
334.6046 |
| n |
0.1733 |
| Epoch |
2460800.5 |
| nobs |
377 |
| nopp |
11 |
| Years observed |
2003-2025 |
| rms |
0.94 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
3.190 |
|
| ep |
0.308 |
|
| sin(ip) |
0.460 |
|
| G |
0.150 |
|
| H |
15.930 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
X |
| Spectral Class Score |
1.876 |
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 31 |
Euphrosyne |
0 |
Euphrosyne |
|
Novakovic |
2019EPSC...13.1671N |
HCM |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 3.1900 |
0.3083 |
0.4597 |
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 |
| 15.93 |
|
|
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 |
| X |
X |
0.3126 |
0.3126 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |