Janpalous

1997 PL4, 1997PL4, 31109, J97P04L

All data for this body: [vot]

MPC data
Name (number) Janpalous (31109)
a 2.30368
e 0.07450
i / sin(i) 6.8913 / 0.11999
q 2.13205
Q 2.47531
ω 241.8803
Node 344.4384
m 77.6355
n 0.2819
Epoch 2460800.5
nobs 1580
nopp 19
Years observed 1996-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent Vesta (4)
 
ap 2.304
ep 0.102
sin(ip) 0.120
G 0.150
H 15.730
Mass
D 3.60 0.171
pV 0.086 0.0114
Value
Rotational Period 5.146
Period quality 2
Spectral Class V
Spectral Class Score 1.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
4 Vesta 0 Vesta Novakovic 2019EPSC...13.1671N HCM
4 Vesta 401 Vesta Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3038 0.1016 0.1201 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.60 0.171 0.171 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.086 0.0114 0.0114 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
15.73 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
5.146452 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
V S None None Movis NIR Popescu 2018A&A...617A..12P PHOT