Gefion

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

All data for this body: [vot]

MPC data
Name (number) Gefion (1272)
a 2.78635
e 0.15042
i / sin(i) 8.4148 / 0.14634
q 2.36723
Q 3.20547
ω 4.5865
Node 321.3449
m 88.3218
n 0.2119
Epoch 2460800.5
nobs 3651
nopp 29
Years observed 1931-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.784
ep 0.129
sin(ip) 0.157
G 0.150
H 12.920
Mass
D 7.01 0.062
pV 0.249 0.0216
Value
Rotational Period 3.080
Period quality 3-
Spectral Class S
Spectral Class Score 10.050
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 0.0000 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-Nov-2024
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
12.92 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.9 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
3.086 3- Synodic Benishek 2020MPBu...47...75B Lightcurve
3.087 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.850 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 0.990000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
SI Bus VIS Bus 2002Icar..158..146B SPEC