1998 UR20
1998UR20, 13785, 1978 RW12, 1978RW12, 1991 GC4, 1991GC4, J78R12W, J91G04C, J98U20R
All data for this body: [vot]
MPC data
| Name (number) |
1998 UR20 (13785) |
| a |
2.85434 |
| e |
0.00943 |
| i / sin(i) |
0.9854 /
0.01720
|
| q |
2.82743
|
| Q |
2.88124
|
| ω |
25.3425 |
| Node |
291.7736 |
| m |
266.8804 |
| n |
0.2044 |
| Epoch |
2460800.5 |
| nobs |
2893 |
| nopp |
24 |
| Years observed |
1978-2025 |
| rms |
0.70 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.854 |
|
| ep |
0.032 |
|
| sin(ip) |
0.037 |
|
| G |
0.150 |
|
| H |
14.170 |
|
| Mass |
|
|
| D |
4.76 |
0.422 |
| pV |
0.178 |
0.0463 |
|
Value |
| Rotational Period |
|
| Period quality |
None |
| Spectral Class |
K |
| Spectral Class Score |
2.838 |
Family data
| Parent |
Parent name |
Family ID |
Family name |
Cj |
Author |
Reference |
Method |
| 158 |
Koronis |
0 |
Koronis |
|
Novakovic |
2019EPSC...13.1671N |
HCM |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.8545 |
0.0318 |
0.0369 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 4.76 |
0.422 |
0.422 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.178 |
0.0463 |
0.0463 |
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 |
| 14.17 |
|
|
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 |
| K |
|
0.473 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |