1987UN1

16420, J87U01N

All data for this body: [vot]

MPC data
Name (number) 1987UN1 (16420)
Packed designation 16420
a 2.68518
e 0.16363
i / sin(i) 12.7925 / 0.22142
q 2.24579
Q 3.12456
ω 170.4010
Node 227.9745
m 276.9318
n 0.2240
Epoch 2459600.5
nobs 1609
nopp 20
Years observed 1987-2021
rms 0.49
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.686
ep 0.147
sin(ip) 0.229
Value Standard error
G 0.150
H 13.970
Mass
D 4.21 0.197
pV 0.361 0.0713
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 502 Eunomia 0.4000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6858 0.1472 0.2287 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.21 0.197 0.197 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.361 0.0713 0.0713 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2022-01-18 MPC-2022-01-18 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.97 MPC-2022-01-18 MPC-2022-01-18 Phot