Thomas

02555, 1961 US, 1961US, 1971 UZ2, 1971UZ2, 1976 YQ, 1976YQ, 1980 OC, 1980OC, J61U00S, J71U02Z, J76Y00Q, J80O00C

All data for this body: [vot]

MPC data
Name (number) Thomas (2555)
a 2.86992
e 0.08182
i / sin(i) 0.9025 / 0.01575
q 2.63509
Q 3.10474
ω 92.2545
Node 282.7904
m 33.0303
n 0.2027
Epoch 2460800.5
nobs 5102
nopp 36
Years observed 1951-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent Koronis (158)
 
ap 2.870
ep 0.046
sin(ip) 0.036
G 0.150
H 12.070
Mass
D 10.26 1.610
pV 0.320 0.1520
Value
Rotational Period 2.858
Period quality 2
Spectral Class S
Spectral Class Score 7.781
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
158 Koronis 0 Koronis Novakovic 2019EPSC...13.1671N HCM
158 Koronis 605 Koronis -0.0900 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8697 0.0465 0.0358 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.26 1.610 1.610 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.320 0.1520 0.1520 Masiero 2012ApJ...759L...8M 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
12.07 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.858391 2 Sidereal Durech 2020A&A...643A..59D Model
2.8584 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.71 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.7269 0.7269 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT