1999 XA21
1999XA21, 1995 JN1, 1995JN1, A2912, J95J01N, J99X21A
All data for this body: [vot]
MPC data
| Name (number) |
1999 XA21 (102912) |
| a |
2.28675 |
| e |
0.27243 |
| i / sin(i) |
22.5242 /
0.38307
|
| q |
1.66377
|
| Q |
2.90972
|
| ω |
70.1834 |
| Node |
220.7021 |
| m |
203.2205 |
| n |
0.2850 |
| Epoch |
2460800.5 |
| nobs |
1775 |
| nopp |
17 |
| Years observed |
1995-2025 |
| rms |
0.71 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.287 |
|
| ep |
0.262 |
|
| sin(ip) |
0.408 |
|
| G |
0.150 |
|
| H |
15.330 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
41.000 |
| Period quality |
2+ |
| Spectral Class |
C |
| Spectral Class Score |
4.668 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.2866 |
0.2621 |
0.4078 |
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 |
| 15.33 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Periods
| Value |
Quality |
Side real or Synodic |
Author |
Reference |
Method |
| 41.6 |
2+ |
Synodic |
Stephens |
2017MPBu...44...49S |
Lightcurve |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| C |
|
0.778 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |
| S |
S |
None |
None |
Movis |
NIR |
Popescu |
2018A&A...617A..12P |
PHOT |