1999XQ4
1998OL6, 21979, J98O06L, J99X04Q
All data for this body: [vot]
MPC data
| Name (number) |
1999XQ4 (21979) |
| Packed designation |
21979 |
| a |
2.64337 |
| e |
0.06458 |
| i / sin(i) |
3.0419 /
0.05307
|
| q |
2.47265
|
| Q |
2.81409
|
| ω |
317.0854 |
| Node |
180.9760 |
| m |
342.9767 |
| n |
0.2293 |
| Epoch |
2459600.5 |
| nobs |
1483 |
| nopp |
20 |
| Years observed |
1971-2022 |
| rms |
0.66 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.643 |
|
| ep |
0.098 |
|
| sin(ip) |
0.055 |
|
|
Value |
Standard error |
| G |
0.150 |
|
| H |
14.720 |
|
| Mass |
|
|
| D |
4.03 |
0.310 |
| pV |
0.172 |
0.0304 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.6432 |
0.0981 |
0.0549 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Jan-2022 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 4.03 |
0.310 |
0.310 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.172 |
0.0304 |
0.0304 |
Masiero |
2011ApJ...741...68M |
NEATM |
G data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.15 |
|
|
MPC-2022-01-18 |
MPC-2022-01-18 |
Phot |
H data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 14.72 |
|
|
MPC-2022-01-18 |
MPC-2022-01-18 |
Phot |