Arctictern

08769, 1990 OP4, 1990OP4, 2181 T-2, 2181T-2, J90O04P, T2S2181

All data for this body: [vot]

MPC data
Name (number) Arctictern (8769)
a 2.68466
e 0.04861
i / sin(i) 3.0899 / 0.05390
q 2.55417
Q 2.81515
ω 94.4738
Node 187.8519
m 343.0764
n 0.2241
Epoch 2460800.5
nobs 3900
nopp 25
Years observed 1973-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.684
ep 0.063
sin(ip) 0.063
G 0.150
H 13.480
Mass
D 6.80 0.185
pV 0.152 0.0602
Value
Rotational Period
Period quality None
Spectral Class L
Spectral Class Score 8.400
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6843 0.0634 0.0627 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.80 0.185 0.185 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.152 0.0602 0.0602 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
13.48 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
D S 0.5516 0.3410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
L 0.24 Bus VIS Carvano 2010A&A...510A..43C PHOT
L 0.402 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
L S 0.5847 0.3410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.8886 0.3410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT