1999 GG21

1999GG21, 42803, J99G21G

All data for this body: [vot]

MPC data
Name (number) 1999 GG21 (42803)
a 2.76799
e 0.14033
i / sin(i) 10.2928 / 0.17868
q 2.37956
Q 3.15641
ω 329.4872
Node 116.4136
m 338.4138
n 0.2140
Epoch 2460800.5
nobs 3243
nopp 26
Years observed 1951-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.769
ep 0.140
sin(ip) 0.159
G 0.150
H 13.330
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 4.506
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1272 Gefion 0 Gefion Novakovic 2019EPSC...13.1671N HCM
1272 Gefion 516 Gefion -0.4800 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7689 0.1397 0.1589 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
13.33 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 0.751 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT