1990 UJ1

1990UJ1, 12274, 1992 EW1, 1992EW1, J90U01J, J92E01W

All data for this body: [vot]

MPC data
Name (number) 1990 UJ1 (12274)
a 2.67816
e 0.16076
i / sin(i) 13.0581 / 0.22594
q 2.24763
Q 3.10869
ω 198.5223
Node 226.0623
m 290.8124
n 0.2249
Epoch 2460800.5
nobs 4470
nopp 24
Years observed 1990-2025
rms 0.56
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.678
ep 0.161
sin(ip) 0.234
G 0.150
H 13.810
Mass
D 5.62 0.103
pV 0.299 0.0336
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 7.072
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia 0.3800 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6784 0.1612 0.2335 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.85 0.450 0.450 Masiero 2011ApJ...741...68M NEATM
5.67 0.106 0.106 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.263 0.0424 0.0424 Masiero 2011ApJ...741...68M NEATM
0.359 0.0549 0.0549 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.81 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.202 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.9766 0.5120 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT