1987 WD

1987WD, 13502, 1983 TJ, 1983TJ, 1997 GZ42, 1997GZ42, J83T00J, J87W00D, J97G42Z

All data for this body: [vot]

MPC data
Name (number) 1987 WD (13502)
a 2.40099
e 0.15462
i / sin(i) 8.9519 / 0.15560
q 2.02975
Q 2.77223
ω 308.9987
Node 13.4705
m 94.3962
n 0.2649
Epoch 2460800.5
nobs 8550
nopp 22
Years observed 1987-2025
rms 0.46
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.400
ep 0.118
sin(ip) 0.152
G 0.150
H 13.880
Mass
D 7.54 1.235
pV 0.101 0.0348
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3995 0.1177 0.1519 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.74 2.100 2.100 Masiero 2021PSJ.....2..162M NEATM
7.70 2.130 2.130 Masiero 2021PSJ.....2..162M NEATM
8.25 2.190 2.190 Masiero 2020PSJ.....1....5M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.094 0.0770 0.0770 Masiero 2020PSJ.....1....5M NEATM
0.098 0.0380 0.0620 Masiero 2021PSJ.....2..162M NEATM
0.110 0.0460 0.0790 Masiero 2021PSJ.....2..162M 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
13.88 MPC-2023-12-04 MPC-2023-12-04 Phot