1998 QD21
1998QD21, 1999 XU90, 1999XU90, 48954, J98Q21D, J99X90U
All data for this body: [vot]
MPC data
| Name (number) |
1998 QD21 (48954) |
| a |
2.40718 |
| e |
0.04802 |
| i / sin(i) |
2.0040 /
0.03497
|
| q |
2.29159
|
| Q |
2.52278
|
| ω |
290.5070 |
| Node |
182.2962 |
| m |
117.1697 |
| n |
0.2639 |
| Epoch |
2460200.5 |
| nobs |
2065 |
| nopp |
19 |
| Years observed |
1998-2023 |
| rms |
0.64 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.407 |
|
| ep |
0.074 |
|
| sin(ip) |
0.040 |
|
|
Value |
Standard error |
| G |
0.150 |
|
| H |
15.120 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
| Rotational Period |
5.400 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.4069 |
0.0742 |
0.0403 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Oct-2022 |
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 |
| 15.12 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Period data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 5.40 |
|
|
Erasmus |
2019ApJS..242...15E |
Lightcurve |