2001 TD121

2001TD121, 1990 HC3, 1990HC3, 42291, J90H03C, K01TC1D

All data for this body: [vot]

MPC data
Name (number) 2001 TD121 (42291)
a 2.74886
e 0.09891
i / sin(i) 11.6745 / 0.20235
q 2.47698
Q 3.02073
ω 218.9635
Node 268.6230
m 337.0390
n 0.2163
Epoch 2460800.5
nobs 2414
nopp 23
Years observed 1982-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.747
ep 0.127
sin(ip) 0.221
G 0.150
H 14.120
Mass
D 9.13 0.126
pV 0.087 0.0063
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 3.400
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7472 0.1266 0.2212 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.08 2.640 2.640 Masiero 2020PSJ.....1....5M NEATM
10.48 4.040 4.040 Nugent 2016AJ....152...63N NEATM
11.54 3.150 3.150 Masiero 2020PSJ.....1....5M NEATM
11.62 3.840 3.840 Masiero 2021PSJ.....2..162M NEATM
12.87 3.890 3.890 Masiero 2012ApJ...759L...8M NEATM
7.63 2.360 2.360 Masiero 2021PSJ.....2..162M NEATM
8.71 2.606 2.606 Masiero 2017AJ....154..168M NEATM
9.12 0.127 0.127 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.029 0.0300 0.0300 Masiero 2012ApJ...759L...8M NEATM
0.030 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM
0.033 0.0180 0.0390 Masiero 2021PSJ.....2..162M NEATM
0.037 0.0230 0.0230 Masiero 2020PSJ.....1....5M NEATM
0.048 0.0450 0.0450 Masiero 2020PSJ.....1....5M NEATM
0.061 0.0392 0.0392 Masiero 2017AJ....154..168M NEATM
0.078 0.0330 0.0560 Masiero 2021PSJ.....2..162M NEATM
0.104 0.0074 0.0074 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
14.12 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
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.70 Bus VIS Carvano 2010A&A...510A..43C PHOT