1991 UM1

1991UM1, 06831, 1952 UE1, 1952UE1, 1955 QM1, 1955QM1, 1981 OB, 1981OB, J52U01E, J55Q01M, J81O00B, J91U01M

All data for this body: [vot]

MPC data
Name (number) 1991 UM1 (6831)
a 2.19664
e 0.20591
i / sin(i) 4.5930 / 0.08008
q 1.74434
Q 2.64894
ω 354.1439
Node 335.6368
m 147.7346
n 0.3027
Epoch 2460800.5
nobs 6329
nopp 25
Years observed 1952-2025
rms 0.55
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.197
ep 0.141
sin(ip) 0.080
G 0.150
H 14.070
Mass
D 4.42 0.118
pV 0.324 0.0335
Value
Rotational Period
Period quality None
Spectral Class L
Spectral Class Score 2.550
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
8 Flora 0 Flora Novakovic 2019EPSC...13.1671N HCM
8 Flora 402 Flora -0.0400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.1967 0.1412 0.0802 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.40 0.282 0.282 Masiero 2011ApJ...741...68M NEATM
4.43 0.130 0.130 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.302 0.0912 0.0912 Masiero 2011ApJ...741...68M NEATM
0.327 0.0360 0.0360 Masiero 2012ApJ...759L...8M 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
14.07 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
L 0.425 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT