1989 TD4

1989TD4, 1996 FD25, 1996FD25, 2006 VM147, 2006VM147, H8290, J89T04D, J96F25D, K06VE7M

All data for this body: [vot]

MPC data
Name (number) 1989 TD4 (178290)
a 2.59250
e 0.25658
i / sin(i) 4.1026 / 0.07154
q 1.92731
Q 3.25769
ω 266.0220
Node 82.0856
m 203.9936
n 0.2361
Epoch 2460800.5
nobs 1564
nopp 20
Years observed 1989-2025
rms 0.61
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.593
ep 0.201
sin(ip) 0.055
G 0.150
H 16.150
Mass
D 1.67 0.210
pV 0.337 0.0783
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.964
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5933 0.2012 0.0552 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.61 0.330 0.330 Masiero 2012ApJ...759L...8M NEATM
1.71 0.272 0.272 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.325 0.1180 0.1180 Masiero 2012ApJ...759L...8M NEATM
0.347 0.1047 0.1047 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
16.15 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
S 0.994 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT