Halperin

1991NE9, 1996WN2, 1998FZ40, 20274, J91N09E, J96W02N, J98F40Z

All data for this body: [vot]

MPC data
Name (number) Halperin (20274)
Packed designation 20274
a 2.48440
e 0.09529
i / sin(i) 0.1418 / 0.00248
q 2.24767
Q 2.72114
ω 43.0196
Node 249.7934
m 287.1272
n 0.2517
Epoch 2459600.5
nobs 1507
nopp 20
Years observed 1991-2021
rms 0.50
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.483
ep 0.089
sin(ip) 0.018
Value Standard error
G 0.150
H 15.340
Mass
D 2.12 0.388
pV 0.188 0.0426
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4832 0.0895 0.0176 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.12 0.388 0.388 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.188 0.0426 0.0426 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
15.34 MPC-2022-01-18 MPC-2022-01-18 Phot