Langres

12287, 1991 GH5, 1991GH5, 1997 GT23, 1997GT23, J91G05H, J97G23T

All data for this body: [vot]

MPC data
Name (number) Langres (12287)
a 3.18731
e 0.13782
i / sin(i) 4.4015 / 0.07674
q 2.74803
Q 3.62659
ω 70.7078
Node 212.7064
m 275.6489
n 0.1732
Epoch 2460800.5
nobs 2319
nopp 24
Years observed 1991-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent Hygiea (10)
 
ap 3.200
ep 0.128
sin(ip) 0.088
G 0.150
H 14.130
Mass
D 8.03 0.153
pV 0.083 0.0154
Value
Rotational Period 7.300
Period quality 2
Spectral Class S
Spectral Class Score 3.558
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
10 Hygiea 0 Hygiea Novakovic 2019EPSC...13.1671N HCM
10 Hygiea 601 Hygiea Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.2002 0.1275 0.0876 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.03 0.153 0.153 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.083 0.0154 0.0154 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
14.13 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.32 2 Synodic Chang 2019ApJS..241....6C Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.593 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT