1981 SD2

1981SD2, 19118, J81S02D

All data for this body: [vot]

MPC data
Name (number) 1981 SD2 (19118)
a 2.38517
e 0.13011
i / sin(i) 6.3961 / 0.11140
q 2.07483
Q 2.69550
ω 345.9405
Node 34.9994
m 287.0727
n 0.2676
Epoch 2460800.5
nobs 3757
nopp 23
Years observed 1981-2025
rms 0.63
Best values
[raw, vot]

Value Standard error
Parent Vesta (4)
 
ap 2.385
ep 0.101
sin(ip) 0.100
G 0.150
H 13.750
Mass
D 4.59 0.194
pV 0.231 0.0225
Value
Rotational Period
Period quality None
Spectral Class V
Spectral Class Score 13.992
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
4 Vesta 0 Vesta Novakovic 2019EPSC...13.1671N HCM
4 Vesta 401 Vesta Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3849 0.1011 0.1004 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.59 0.194 0.194 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.231 0.0225 0.0225 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
13.75 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
V DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
V 0.40 Bus VIS Carvano 2010A&A...510A..43C PHOT
V 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
V V 0.8654 0.8654 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT