Billprady

08630, 1981 EY35, 1981EY35, J81E35Y

All data for this body: [vot]

MPC data
Name (number) Billprady (8630)
a 2.28357
e 0.14070
i / sin(i) 3.8768 / 0.06761
q 1.96228
Q 2.60486
ω 233.0725
Node 1.8157
m 242.8216
n 0.2856
Epoch 2460800.5
nobs 3829
nopp 26
Years observed 1953-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.282
ep 0.161
sin(ip) 0.068
G 0.150
H 14.200
Mass
D 3.56 0.819
pV 0.379 0.1598
Value
Rotational Period 79.650
Period quality 2
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2822 0.1609 0.0684 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.56 0.819 0.819 Masiero 2017AJ....154..168M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.379 0.1598 0.1598 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
14.20 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
79.48 2 Sidereal Durech 2020A&A...643A..59D Model
79.652 2 Synodic Waszczak 2015AJ....150...75W Lightcurve