1990 SR8

1990SR8, 16495, 1997 WE40, 1997WE40, J90S08R, J97W40E

All data for this body: [vot]

MPC data
Name (number) 1990 SR8 (16495)
a 2.21989
e 0.06906
i / sin(i) 4.8892 / 0.08523
q 2.06660
Q 2.37319
ω 3.9878
Node 79.4272
m 90.9575
n 0.2980
Epoch 2460800.5
nobs 2796
nopp 21
Years observed 1976-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.220
ep 0.103
sin(ip) 0.076
G 0.150
H 15.590
Mass
D 2.13 0.619
pV 0.325 0.1704
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 9.102
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2202 0.1032 0.0763 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.13 0.619 0.619 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.325 0.1704 0.1704 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
15.59 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
L 0.167 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.79 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.9203 0.9203 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT