2009 HD9
2009HD9, 2012 EC1, 2012EC1, K09H09D, K12E01C, W8476
All data for this body: [vot]
MPC data
| Name (number) |
2009 HD9 (328476) |
| a |
2.17672 |
| e |
0.18512 |
| i / sin(i) |
1.0354 /
0.01807
|
| q |
1.77377
|
| Q |
2.57967
|
| ω |
359.3439 |
| Node |
271.6897 |
| m |
315.0955 |
| n |
0.3069 |
| Epoch |
2460800.5 |
| nobs |
181 |
| nopp |
11 |
| Years observed |
1996-2025 |
| rms |
1.03 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.180 |
|
| ep |
0.164 |
|
| sin(ip) |
0.043 |
|
| G |
0.150 |
|
| H |
18.280 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
S |
| Spectral Class Score |
5.550 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.1796 |
0.1642 |
0.0435 |
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 |
| 18.28 |
|
|
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 |
|
0.925 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |