1997 WS21
1997WS21, 10901, 1990 SJ13, 1990SJ13, J90S13J, J97W21S
All data for this body: [vot]
MPC data
| Name (number) |
1997 WS21 (10901) |
| a |
2.21859 |
| e |
0.12008 |
| i / sin(i) |
2.8811 /
0.05026
|
| q |
1.95218
|
| Q |
2.48501
|
| ω |
248.0234 |
| Node |
167.2367 |
| m |
122.2639 |
| n |
0.2983 |
| Epoch |
2460800.5 |
| nobs |
2096 |
| nopp |
21 |
| Years observed |
1990-2025 |
| rms |
0.79 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.219 |
|
| ep |
0.125 |
|
| sin(ip) |
0.056 |
|
| G |
0.150 |
|
| H |
15.530 |
|
| Mass |
|
|
| D |
2.31 |
0.591 |
| pV |
0.300 |
0.1211 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
B |
| Spectral Class Score |
1.866 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.2189 |
0.1253 |
0.0556 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 2.31 |
0.591 |
0.591 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.300 |
0.1211 |
0.1211 |
Masiero |
2011ApJ...741...68M |
NEATM |
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 |
| 15.53 |
|
|
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 |
| B |
|
0.311 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |