1991 VY2

1991VY2, 1998 XP32, 1998XP32, 27771, J91V02Y, J98X32P

All data for this body: [vot]

MPC data
Name (number) 1991 VY2 (27771)
a 2.28593
e 0.10563
i / sin(i) 6.6438 / 0.11570
q 2.04448
Q 2.52739
ω 60.1677
Node 268.2148
m 325.2227
n 0.2852
Epoch 2460800.5
nobs 3259
nopp 23
Years observed 1987-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.286
ep 0.057
sin(ip) 0.128
G 0.150
H 14.380
Mass
D 4.02 0.412
pV 0.275 0.0654
Value
Rotational Period 1.100
Period quality
Spectral Class S
Spectral Class Score 17.574
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2858 0.0566 0.1282 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.02 0.412 0.412 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.275 0.0654 0.0654 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
14.38 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
1.15 Synodic Erasmus 2018ApJS..237...19E Lightcurve
1.15 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
S 0.964000 Bus-DeMeo VIS Erasmus 2018ApJS..237...19E PHOT
S 0.969000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT
S 0.996 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT