1991 RL18
1991RL18, 1999 NL61, 1999NL61, 2002 JB17, 2002JB17, 42489, J91R18L, J99N61L, K02J17B
All data for this body: [vot]
MPC data
| Name (number) |
1991 RL18 (42489) |
| a |
2.59999 |
| e |
0.18371 |
| i / sin(i) |
12.7465 /
0.22064
|
| q |
2.12234
|
| Q |
3.07764
|
| ω |
223.3741 |
| Node |
179.5103 |
| m |
193.1637 |
| n |
0.2351 |
| Epoch |
2460200.5 |
| nobs |
1721 |
| nopp |
23 |
| Years observed |
1990-2023 |
| rms |
0.66 |
Best values
|
Value |
Standard error |
| Parent |
Eunomia (15) |
|
| |
|
|
| ap |
2.599 |
|
| ep |
0.163 |
|
| sin(ip) |
0.219 |
|
|
Value |
Standard error |
| G |
0.150 |
|
| H |
14.630 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
| Rotational Period |
|
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 15 |
Eunomia |
502 |
Eunomia |
-0.3100 |
Nesvorny |
doi.org/10.26033/6cg5-pt13 |
HCM-2020-08-14 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.5990 |
0.1629 |
0.2194 |
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 |
| 14.63 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |