Keinonen

10489, 1975 TB5, 1975TB5, 1985 TJ1, 1985TJ1, 1990 QA5, 1990QA5, J75T05B, J85T01J, J90Q05A

All data for this body: [vot]

MPC data
Name (number) Keinonen (10489)
a 3.00383
e 0.08944
i / sin(i) 10.9175 / 0.18940
q 2.73517
Q 3.27249
ω 292.8103
Node 25.9663
m 254.0788
n 0.1893
Epoch 2460800.5
nobs 4235
nopp 26
Years observed 1975-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.006
ep 0.065
sin(ip) 0.185
G 0.150
H 12.410
Mass
D 11.22 0.122
pV 0.152 0.0237
Value
Rotational Period
Period quality None
Spectral Class X
Spectral Class Score 5.446
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0059 0.0650 0.1852 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
11.22 0.122 0.122 Masiero 2011ApJ...741...68M NEATM
12.30 1.390 1.390 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.140 0.0570 0.0570 Masiero 2012ApJ...759L...8M NEATM
0.154 0.0260 0.0260 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
12.41 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
Cgx Cgx None None Movis NIR Popescu 2018A&A...617A..12P PHOT
K DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
L 0.75 Bus VIS Carvano 2010A&A...510A..43C PHOT
X X 0.4308 0.4480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.4769 0.4480 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT