Otaru

04491, 1980 BQ3, 1980BQ3, 1985 VJ1, 1985VJ1, 1988 RP, 1988RP, J80B03Q, J85V01J, J88R00P

All data for this body: [vot]

MPC data
Name (number) Otaru (4491)
a 2.17319
e 0.02928
i / sin(i) 3.6735 / 0.06407
q 2.10956
Q 2.23681
ω 71.6537
Node 313.4994
m 125.5176
n 0.3077
Epoch 2460800.5
nobs 5241
nopp 26
Years observed 1980-2025
rms 0.63
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.174
ep 0.074
sin(ip) 0.070
G 0.150
H 13.710
Mass
D 5.11 0.265
pV 0.389 0.1136
Value
Rotational Period 2.930
Period quality 3
Spectral Class S
Spectral Class Score 6.356
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.1735 0.0739 0.0696 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.11 0.265 0.265 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.389 0.1136 0.1136 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
13.71 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.936 3 Synodic Benishek 2021MPBu...48...77B Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
A A 0.4892 0.4810 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S 0.990000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S A 0.2343 0.4810 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
Sa Bus VIS Bus 2002Icar..158..146B SPEC