1987 ON

1987ON, 18332, 1995 KU1, 1995KU1, J87O00N, J95K01U

All data for this body: [vot]

MPC data
Name (number) 1987 ON (18332)
a 2.59893
e 0.19790
i / sin(i) 13.9525 / 0.24112
q 2.08459
Q 3.11327
ω 154.5747
Node 158.1827
m 8.3315
n 0.2352
Epoch 2460800.5
nobs 2641
nopp 24
Years observed 1987-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.599
ep 0.167
sin(ip) 0.230
G 0.150
H 14.200
Mass
D 6.50 0.500
pV 0.080 0.0176
Value
Rotational Period 11.981
Period quality 2
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia -0.3600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5995 0.1672 0.2297 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.50 0.500 0.500 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.080 0.0176 0.0176 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
14.20 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
11.9815 2 Synodic Pal 2020ApJS..247...26P Lightcurve