1989 TR2

1989TR2, 1999 UO2, 1999UO2, 39525, J89T02R, J99U02O

All data for this body: [vot]

MPC data
Name (number) 1989 TR2 (39525)
a 2.90185
e 0.13182
i / sin(i) 13.8087 / 0.23868
q 2.51933
Q 3.28438
ω 30.6794
Node 51.6021
m 25.2460
n 0.1994
Epoch 2460800.5
nobs 5113
nopp 21
Years observed 1989-2025
rms 0.61
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.902
ep 0.124
sin(ip) 0.225
G 0.150
H 12.470
Mass
D 9.26 0.105
pV 0.221 0.0181
Value
Rotational Period 3.938
Period quality 2
Spectral Class S
Spectral Class Score 0.924
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9024 0.1238 0.2247 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
9.22 0.140 0.140 Masiero 2011ApJ...741...68M NEATM
9.31 0.160 0.160 Masiero 2014ApJ...791..121M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.220 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM
0.228 0.0427 0.0427 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
12.47 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.93849 2 Synodic Pal 2020ApJS..247...26P Lightcurve
3.93896 2 Sidereal Durech 2023A&A...675A..24D Model
3.938988 2 Sidereal Durech 2019A&A...631A...2D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.154 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT