Laon

12279, 1979 MM, 1979MM, 1990 WP4, 1990WP4, J79M00M, J90W04P

All data for this body: [vot]

MPC data
Name (number) Laon (12279)
a 2.77035
e 0.09385
i / sin(i) 10.2516 / 0.17797
q 2.51037
Q 3.03034
ω 126.5021
Node 88.0338
m 25.7792
n 0.2137
Epoch 2460800.5
nobs 4115
nopp 26
Years observed 1979-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.771
ep 0.130
sin(ip) 0.161
G 0.150
H 12.750
Mass
D 7.93 0.038
pV 0.281 0.0324
Value
Rotational Period 5.598
Period quality 2
Spectral Class S
Spectral Class Score 1.000
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 -0.5200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7710 0.1298 0.1605 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.93 0.038 0.038 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.281 0.0324 0.0324 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
12.75 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
5.59803 2 Sidereal Durech 2018A&A...617A..57D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S V None None Movis NIR Popescu 2018A&A...617A..12P PHOT