1991 UM4
1991UM4, 05487, 1983 RD8, 1983RD8, 1990 LC, 1990LC, J83R08D, J90L00C, J91U04M
All data for this body: [vot]
MPC data
| Name (number) |
1991 UM4 (5487) |
| a |
2.41103 |
| e |
0.16146 |
| i / sin(i) |
2.3073 /
0.04026
|
| q |
2.02175
|
| Q |
2.80031
|
| ω |
241.2297 |
| Node |
355.8066 |
| m |
132.2751 |
| n |
0.2633 |
| Epoch |
2460800.5 |
| nobs |
3421 |
| nopp |
28 |
| Years observed |
1953-2025 |
| rms |
0.67 |
Best values
|
Value |
Standard error |
| Parent |
Nysa (44) |
|
| |
|
|
| ap |
2.413 |
|
| ep |
0.178 |
|
| sin(ip) |
0.047 |
|
| G |
0.150 |
|
| H |
13.970 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
6.600 |
| Period quality |
2 |
| Spectral Class |
S |
| Spectral Class Score |
5.994 |
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 44 |
Nysa |
405 |
Nysa-Polana |
-0.1900 |
Nesvorny |
doi.org/10.26033/6cg5-pt13 |
HCM-2020-08-14 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.4125 |
0.1776 |
0.0468 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
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 |
| 13.97 |
|
|
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 |
| S |
|
0.999000 |
|
Bus-DeMeo |
VIS |
Erasmus |
2019ApJS..242...15E |
PHOT |