2001 OR4

2001OR4, I5989, K01O04R

All data for this body: [vot]

MPC data
Name (number) 2001 OR4 (185989)
a 2.68278
e 0.29741
i / sin(i) 9.9114 / 0.17213
q 1.88490
Q 3.48066
ω 3.4419
Node 21.8387
m 119.4547
n 0.2243
Epoch 2460800.5
nobs 989
nopp 17
Years observed 2001-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.686
ep 0.245
sin(ip) 0.154
G 0.150
H 16.040
Mass
D 3.58 0.060
pV 0.066 0.0069
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 3.540
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6858 0.2446 0.1537 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.58 0.060 0.060 Masiero 2012ApJ...759L...8M NEATM
3.66 1.240 1.240 Masiero 2021PSJ.....2..162M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.063 0.0280 0.0500 Masiero 2021PSJ.....2..162M NEATM
0.066 0.0070 0.0070 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
16.04 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
Bk Bk None None Movis NIR Popescu 2018A&A...617A..12P PHOT
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.10 Bus VIS Carvano 2010A&A...510A..43C PHOT
C C 0.0771 0.1320 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.1463 0.1320 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT