Billward

07812, 1984 UT, 1984UT, 2017 UV86, 2017UV86, J84U00T, K17U86V

All data for this body: [vot]

MPC data
Name (number) Billward (7812)
a 2.78694
e 0.22638
i / sin(i) 16.1402 / 0.27799
q 2.15604
Q 3.41785
ω 203.1314
Node 231.8841
m 238.4804
n 0.2118
Epoch 2460800.5
nobs 3737
nopp 25
Years observed 1984-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.785
ep 0.241
sin(ip) 0.280
G 0.150
H 12.880
Mass
D 17.25 0.284
pV 0.023 0.0034
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7852 0.2409 0.2797 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
16.20 4.810 4.810 Masiero 2020PSJ.....1....5M NEATM
16.89 0.315 0.315 Masiero 2011ApJ...741...68M NEATM
16.96 5.213 5.213 Masiero 2017AJ....154..168M NEATM
17.89 3.980 3.980 Masiero 2020PSJ.....1....5M NEATM
18.27 3.650 3.650 Ali-Lagoa 2018A&A...612A..85A NEATM
18.30 3.060 3.060 Masiero 2012ApJ...759L...8M NEATM
18.61 0.750 0.750 Usui 2011PASJ...63.1117U NEATM
20.07 4.010 4.010 Ali-Lagoa 2018A&A...612A..85A NEATM
23.48 2.600 2.600 Tedesco 2002AJ....123.1056T STM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.015 0.0040 0.0040 Tedesco 2002AJ....123.1056T STM
0.037 0.0150 0.0150 Ali-Lagoa 2018A&A...612A..85A NEATM
0.040 0.0200 0.0200 Masiero 2020PSJ.....1....5M NEATM
0.044 0.0300 0.0300 Masiero 2020PSJ.....1....5M NEATM
0.044 0.0239 0.0239 Masiero 2017AJ....154..168M NEATM
0.045 0.0180 0.0180 Ali-Lagoa 2018A&A...612A..85A NEATM
0.048 0.0160 0.0160 Masiero 2012ApJ...759L...8M NEATM
0.057 0.0141 0.0141 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
12.88 MPC-2023-12-04 MPC-2023-12-04 Phot