Royclarke

04550, 1977 HH1, 1977HH1, 1978 QR, 1978QR, 1984 UV1, 1984UV1, 1998 EF22, 1998EF22, J77H01H, J78Q00R, J84U01V, J98E22F

All data for this body: [vot]

MPC data
Name (number) Royclarke (4550)
a 3.10745
e 0.22174
i / sin(i) 0.2453 / 0.00428
q 2.41839
Q 3.79651
ω 311.8553
Node 16.7774
m 169.0889
n 0.1799
Epoch 2460800.5
nobs 4061
nopp 33
Years observed 1971-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.115
ep 0.193
sin(ip) 0.021
G 0.150
H 12.900
Mass
D 13.99 0.228
pV 0.070 0.0092
Value
Rotational Period 8.763
Period quality 2
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1152 0.1928 0.0209 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
11.37 2.270 2.270 Ali-Lagoa 2018A&A...612A..85A NEATM
13.24 0.342 0.342 Masiero 2011ApJ...741...68M NEATM
14.62 0.347 0.347 Masiero 2011ApJ...741...68M NEATM
14.75 0.700 0.700 Usui 2011PASJ...63.1117U NEATM
16.36 3.270 3.270 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.054 0.0220 0.0220 Ali-Lagoa 2018A&A...612A..85A NEATM
0.063 0.0172 0.0172 Masiero 2011ApJ...741...68M NEATM
0.076 0.0131 0.0131 Masiero 2011ApJ...741...68M NEATM
0.113 0.0450 0.0450 Ali-Lagoa 2018A&A...612A..85A 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
12.90 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
8.7633 2 Sidereal Durech 2023A&A...675A..24D Model