1987 BU1

1987BU1, 1993 TB8, 1993TB8, 1997 VG3, 1997VG3, 30774, J87B01U, J93T08B, J97V03G

All data for this body: [vot]

MPC data
Name (number) 1987 BU1 (30774)
a 2.41991
e 0.17639
i / sin(i) 3.4279 / 0.05979
q 1.99305
Q 2.84676
ω 212.0804
Node 241.2200
m 83.2778
n 0.2618
Epoch 2460800.5
nobs 1889
nopp 20
Years observed 1987-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.421
ep 0.188
sin(ip) 0.074
G 0.150
H 15.190
Mass
D 5.33 0.112
pV 0.084 0.0123
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4210 0.1881 0.0742 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.51 0.985 0.985 Masiero 2017AJ....154..168M NEATM
3.62 0.940 0.940 Masiero 2021PSJ.....2..162M NEATM
3.79 0.820 0.820 Masiero 2020PSJ.....1....5M NEATM
5.41 0.115 0.115 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.080 0.0129 0.0129 Masiero 2011ApJ...741...68M NEATM
0.112 0.0770 0.0770 Masiero 2020PSJ.....1....5M NEATM
0.135 0.0500 0.0790 Masiero 2021PSJ.....2..162M NEATM
0.143 0.0773 0.0773 Masiero 2017AJ....154..168M 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
15.19 MPC-2023-12-04 MPC-2023-12-04 Phot