1999 JA

1999JA, 2001 QW277, 2001QW277, 74534, J99J00A, K01QR7W

All data for this body: [vot]

MPC data
Name (number) 1999 JA (74534)
a 3.08733
e 0.04580
i / sin(i) 9.3877 / 0.16311
q 2.94593
Q 3.22873
ω 42.7254
Node 36.8715
m 46.1535
n 0.1817
Epoch 2460800.5
nobs 2718
nopp 20
Years observed 1999-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.088
ep 0.045
sin(ip) 0.155
G 0.150
H 13.850
Mass
D 6.38 0.139
pV 0.166 0.0107
Value
Rotational Period 9.980
Period quality 2
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0878 0.0451 0.1549 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.44 0.196 0.196 Masiero 2011ApJ...741...68M NEATM
7.31 0.196 0.196 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.120 0.0148 0.0148 Masiero 2011ApJ...741...68M NEATM
0.217 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
13.85 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
9.9638 2 Sidereal Durech 2023A&A...675A..24D Model
9.986 2 Synodic Podlewska 2021ApJS..255....4P Lightcurve