1999 TJ31

1999TJ31, 1990 QA13, 1990QA13, 2000 YP62, 2000YP62, 42939, J90Q13A, J99T31J, K00Y62P

All data for this body: [vot]

MPC data
Name (number) 1999 TJ31 (42939)
a 2.66405
e 0.02455
i / sin(i) 1.2398 / 0.02164
q 2.59864
Q 2.72947
ω 210.8681
Node 339.3942
m 142.3761
n 0.2267
Epoch 2460800.5
nobs 2201
nopp 23
Years observed 1990-2025
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent Henan (2085)
 
ap 2.664
ep 0.066
sin(ip) 0.035
G 0.150
H 14.650
Mass
D 3.07 0.332
pV 0.326 0.0425
Value
Rotational Period 4.900
Period quality 2
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
2085 Henan 532 Henan -0.6400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6645 0.0660 0.0355 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.07 0.332 0.332 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.326 0.0425 0.0425 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
14.65 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.97 2 Synodic Chang 2015ApJS..219...27C Lightcurve