Gefion

01272, 1917 SF, 1917SF, 1931 TZ1, 1931TZ1, J17S00F, J31T01Z

All data for this body: [vot]

MPC data
Name (number) Gefion (1272)
a 2.78446
e 0.15027
i / sin(i) 8.4145 / 0.14633
q 2.36604
Q 3.20289
ω 4.1941
Node 321.3895
m 321.3970
n 0.2121
Epoch 2460200.5
nobs 2846
nopp 28
Years observed 1931-2023
rms 0.60
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.784
ep 0.129
sin(ip) 0.157
Value Standard error
G 0.150
H 12.980
Mass
D 7.01 0.062
pV 0.249 0.0216
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1272 Gefion 516 Gefion 0.0000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7838 0.1294 0.1569 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.96 0.170 0.170 Masiero 2014ApJ...791..121M NEATM
7.02 0.066 0.066 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.249 0.0256 0.0256 Masiero 2011ApJ...741...68M NEATM
0.250 0.0400 0.0400 Masiero 2014ApJ...791..121M 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
12.98 MPC-2023-12-04 MPC-2023-12-04 Phot