1997 UT20

1997UT20, 1999 GJ37, 1999GJ37, 31150, J97U20T, J99G37J

All data for this body: [vot]

MPC data
Name (number) 1997 UT20 (31150)
a 2.46234
e 0.07311
i / sin(i) 8.7102 / 0.15144
q 2.28233
Q 2.64235
ω 196.1646
Node 42.6108
m 223.4742
n 0.2551
Epoch 2460800.5
nobs 2563
nopp 20
Years observed 1997-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.461
ep 0.094
sin(ip) 0.140
G 0.150
H 14.960
Mass
D 2.31 0.282
pV 0.526 0.2095
Value
Rotational Period 1.100
Period quality
Spectral Class C
Spectral Class Score 7.800
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4605 0.0939 0.1402 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.31 0.282 0.282 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.526 0.2095 0.2095 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
14.96 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
1.13 Synodic Erasmus 2018ApJS..237...19E Lightcurve
1.13 Synodic Erasmus 2019ApJS..242...15E Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C S 0.648000 0.270000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT
C S 0.652000 0.263000 Bus-DeMeo VIS Erasmus 2018ApJS..237...19E PHOT
S 0.889 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT