1990 UJ4
1990UJ4, 1989 NP1, 1989NP1, 1998 XL31, 1998XL31, 27741, J89N01P, J90U04J, J98X31L
All data for this body: [vot]
MPC data
| Name (number) |
1990 UJ4 (27741) |
| a |
2.44609 |
| e |
0.12133 |
| i / sin(i) |
11.1164 /
0.19280
|
| q |
2.14930
|
| Q |
2.74287
|
| ω |
192.2562 |
| Node |
63.4020 |
| m |
140.4709 |
| n |
0.2576 |
| Epoch |
2460800.5 |
| nobs |
3248 |
| nopp |
24 |
| Years observed |
1989-2025 |
| rms |
0.70 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.447 |
|
| ep |
0.133 |
|
| sin(ip) |
0.176 |
|
| G |
0.150 |
|
| H |
13.740 |
|
| Mass |
|
|
| D |
6.70 |
0.422 |
| pV |
0.207 |
0.0776 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
D |
| Spectral Class Score |
4.321 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.4467 |
0.1330 |
0.1762 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 6.70 |
0.422 |
0.422 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.207 |
0.0776 |
0.0776 |
Masiero |
2011ApJ...741...68M |
NEATM |
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 |
| 13.74 |
|
|
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 |
| D |
D |
0.7201 |
0.7201 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |