Ridley

04025, 1974 RO1, 1974RO1, 1981 WU, 1981WU, J74R01O, J81W00U

All data for this body: [vot]

MPC data
Name (number) Ridley (4025)
a 2.25221
e 0.16703
i / sin(i) 3.1293 / 0.05459
q 1.87601
Q 2.62840
ω 245.6594
Node 147.3135
m 149.4391
n 0.2916
Epoch 2460200.5
nobs 3271
nopp 28
Years observed 1974-2023
rms 0.56
Best values
[raw, vot]

Value Standard error
Parent Nysa (44)
 
ap 2.252
ep 0.145
sin(ip) 0.053
Value Standard error
G 0.150
H 13.890
Mass
D 4.39 0.162
pV 0.253 0.0359
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
44 Nysa 405 Nysa-Polana -3.2800 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2519 0.1451 0.0531 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.02 1.060 1.060 Nugent 2016AJ....152...63N NEATM
4.38 0.230 0.230 Masiero 2011ApJ...741...68M NEATM
4.42 0.235 0.235 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.249 0.0509 0.0509 Masiero 2011ApJ...741...68M NEATM
0.253 0.0539 0.0539 Masiero 2011ApJ...741...68M NEATM
0.280 0.1500 0.1500 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
13.89 MPC-2023-12-04 MPC-2023-12-04 Phot