1999 YF21
1999YF21, J99Y21F, P7734
All data for this body: [vot]
MPC data
| Name (number) |
1999 YF21 (257734) |
| a |
2.41264 |
| e |
0.17140 |
| i / sin(i) |
2.4516 /
0.04278
|
| q |
1.99912
|
| Q |
2.82617
|
| ω |
204.9047 |
| Node |
303.1521 |
| m |
248.6072 |
| n |
0.2630 |
| Epoch |
2460800.5 |
| nobs |
444 |
| nopp |
14 |
| Years observed |
1999-2024 |
| rms |
0.87 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.414 |
|
| ep |
0.206 |
|
| sin(ip) |
0.057 |
|
| G |
0.150 |
|
| H |
17.300 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
V |
| Spectral Class Score |
0.829 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.4145 |
0.2063 |
0.0569 |
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 |
| 17.30 |
|
|
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 |
| V |
V |
0.1382 |
0.1382 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |