1999 VR31

1999VR31, A2631, J99V31R

All data for this body: [vot]

MPC data
Name (number) 1999 VR31 (102631)
a 2.76075
e 0.08311
i / sin(i) 8.4154 / 0.14635
q 2.53130
Q 2.99020
ω 317.3254
Node 234.8256
m 64.7651
n 0.2149
Epoch 2460800.5
nobs 806
nopp 19
Years observed 1999-2025
rms 0.86
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.761
ep 0.124
sin(ip) 0.162
G 0.150
H 15.410
Mass
D 2.67 0.675
pV 0.206 0.0860
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.970
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1272 Gefion 0 Gefion Novakovic 2019EPSC...13.1671N HCM
1272 Gefion 516 Gefion -0.2800 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7610 0.1245 0.1619 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.67 0.675 0.675 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.206 0.0860 0.0860 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
15.41 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 0.995 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT