2017 HD21
2017HD21, ~0F71, K17H21D
All data for this body: [vot]
MPC data
| Name (number) |
2017 HD21 (678095) |
| a |
2.32236 |
| e |
0.17237 |
| i / sin(i) |
24.4021 /
0.41314
|
| q |
1.92206
|
| Q |
2.72266
|
| ω |
327.1906 |
| Node |
169.0754 |
| m |
157.2066 |
| n |
0.2785 |
| Epoch |
2460800.5 |
| nobs |
103 |
| nopp |
8 |
| Years observed |
1999-2024 |
| rms |
0.94 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.322 |
|
| ep |
0.195 |
|
| sin(ip) |
0.408 |
|
| G |
0.150 |
|
| H |
17.820 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
None |
| Spectral Class Score |
|
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 25 |
Phocaea |
0 |
Phocaea |
|
Novakovic |
2019EPSC...13.1671N |
HCM |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.3216 |
0.1948 |
0.4077 |
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 |
| 17.82 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |