1997 GC21

1997GC21, 1999 TK137, 1999TK137, 96331, J97G21C, J99TD7K

All data for this body: [vot]

MPC data
Name (number) 1997 GC21 (96331)
a 2.72304
e 0.09878
i / sin(i) 4.8465 / 0.08449
q 2.45406
Q 2.99201
ω 148.5779
Node 4.8704
m 122.8016
n 0.2193
Epoch 2460800.5
nobs 768
nopp 18
Years observed 1997-2025
rms 0.81
Best values
[raw, vot]

Value Standard error
Parent Merxia (808)
 
ap 2.723
ep 0.134
sin(ip) 0.086
G 0.150
H 15.830
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
808 Merxia 0 Merxia Novakovic 2019EPSC...13.1671N HCM
808 Merxia 513 Merxia -0.6000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7232 0.1342 0.0859 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
15.83 MPC-2023-12-04 MPC-2023-12-04 Phot