1999 UM4
1999UM4, 66810, J99U04M
All data for this body: [vot]
MPC data
| Name (number) |
1999 UM4 (66810) |
| a |
2.70573 |
| e |
0.25528 |
| i / sin(i) |
13.9231 /
0.24062
|
| q |
2.01502
|
| Q |
3.39644
|
| ω |
87.7544 |
| Node |
230.5797 |
| m |
347.3963 |
| n |
0.2215 |
| Epoch |
2460800.5 |
| nobs |
1754 |
| nopp |
21 |
| Years observed |
1998-2025 |
| rms |
0.70 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.705 |
|
| ep |
0.180 |
|
| sin(ip) |
0.265 |
|
| G |
0.150 |
|
| H |
14.590 |
|
| Mass |
|
|
| D |
|
|
| pV |
|
|
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
S |
| Spectral Class Score |
7.139 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.7046 |
0.1799 |
0.2645 |
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 |
| 14.59 |
|
|
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 |
| Ds |
Ad |
None |
None |
Movis |
NIR |
Popescu |
2018A&A...617A..12P |
PHOT |
| S |
|
0.900 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |
| S |
S |
0.2899 |
0.2899 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |