1999 JS81

1999JS81, 1998 BH40, 1998BH40, 35891, J98B40H, J99J81S

All data for this body: [vot]

MPC data
Name (number) 1999 JS81 (35891)
a 2.42114
e 0.20208
i / sin(i) 11.3406 / 0.19664
q 1.93187
Q 2.91041
ω 227.0107
Node 138.3813
m 180.2945
n 0.2616
Epoch 2460800.5
nobs 3181
nopp 21
Years observed 1998-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.422
ep 0.161
sin(ip) 0.185
G 0.150
H 14.370
Mass
D 5.09 0.172
pV 0.164 0.0149
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4220 0.1613 0.1855 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.95 1.190 1.190 Nugent 2016AJ....152...63N NEATM
4.74 0.980 0.980 Masiero 2021PSJ.....2..162M NEATM
4.75 1.530 1.530 Masiero 2021PSJ.....2..162M NEATM
5.13 0.178 0.178 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.102 0.0440 0.0770 Masiero 2021PSJ.....2..162M NEATM
0.150 0.0490 0.0730 Masiero 2021PSJ.....2..162M NEATM
0.169 0.0160 0.0160 Masiero 2011ApJ...741...68M NEATM
0.170 0.1300 0.1300 Nugent 2016AJ....152...63N 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
14.37 MPC-2023-12-04 MPC-2023-12-04 Phot