1991 VA1

1991VA1, 08674, 1988 DU4, 1988DU4, 1990 ON, 1990ON, J88D04U, J90O00N, J91V01A

All data for this body: [vot]

MPC data
Name (number) 1991 VA1 (8674)
a 3.23181
e 0.10141
i / sin(i) 10.2444 / 0.17785
q 2.90407
Q 3.55954
ω 65.6053
Node 244.6689
m 358.7360
n 0.1696
Epoch 2460800.5
nobs 3666
nopp 28
Years observed 1988-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.232
ep 0.084
sin(ip) 0.197
G 0.150
H 12.700
Mass
D 8.57 0.239
pV 0.289 0.0503
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 2.974
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.2320 0.0836 0.1970 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.57 0.239 0.239 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.289 0.0503 0.0503 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
12.70 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 0.329 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S None None Movis NIR Popescu 2018A&A...617A..12P PHOT
V V DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT