2004 GV21

2004GV21, 2001 TO197, 2001TO197, E4711, K01TJ7O, K04G21V

All data for this body: [vot]

MPC data
Name (number) 2004 GV21 (144711)
a 2.75314
e 0.23148
i / sin(i) 8.2731 / 0.14389
q 2.11586
Q 3.39043
ω 353.2585
Node 241.5898
m 185.1183
n 0.2158
Epoch 2460800.5
nobs 678
nopp 18
Years observed 2001-2024
rms 0.85
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.750
ep 0.270
sin(ip) 0.155
G 0.150
H 15.850
Mass
D 4.46 0.207
pV 0.056 0.0081
Value
Rotational Period
Period quality None
Spectral Class L
Spectral Class Score 1.806
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7503 0.2697 0.1550 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.46 0.209 0.209 Masiero 2011ApJ...741...68M NEATM
4.50 1.430 1.430 Masiero 2020PSJ.....1....5M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.046 0.0400 0.0400 Masiero 2020PSJ.....1....5M NEATM
0.056 0.0083 0.0083 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
15.85 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
B C 0.1294 0.1800 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.0798 0.1800 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.2196 0.1800 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L 0.301 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT