1999 XM221
1999XM221, 1998 SR104, 1998SR104, 41329, J98SA4R, J99XM1M
All data for this body: [vot]
MPC data
| Name (number) |
1999 XM221 (41329) |
| a |
3.48827 |
| e |
0.06454 |
| i / sin(i) |
11.2299 /
0.19475
|
| q |
3.26312
|
| Q |
3.71341
|
| ω |
274.9633 |
| Node |
36.6612 |
| m |
75.8159 |
| n |
0.1513 |
| Epoch |
2460800.5 |
| nobs |
1776 |
| nopp |
24 |
| Years observed |
1996-2025 |
| rms |
0.78 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
3.495 |
|
| ep |
0.047 |
|
| sin(ip) |
0.188 |
|
| G |
0.150 |
|
| H |
13.560 |
|
| Mass |
|
|
| D |
12.69 |
0.330 |
| pV |
0.052 |
0.0069 |
|
Value |
| Rotational Period |
32.810 |
| Period quality |
2 |
| Spectral Class |
None |
| Spectral Class Score |
|
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 3.4949 |
0.0473 |
0.1880 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 12.69 |
0.330 |
0.330 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.052 |
0.0069 |
0.0069 |
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 |
| 13.56 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Periods
| Value |
Quality |
Side real or Synodic |
Author |
Reference |
Method |
| 32.813 |
2 |
Sidereal |
Durech |
2023A&A...675A..24D |
Model |