Roberthelm

1998 RN40, 1998RN40, 1999 XA159, 1999XA159, 25539, J98R40N, J99XF9A

All data for this body: [vot]

MPC data
Name (number) Roberthelm (25539)
a 2.69919
e 0.03387
i / sin(i) 6.1918 / 0.10786
q 2.60777
Q 2.79061
ω 40.8404
Node 114.2983
m 65.0337
n 0.2223
Epoch 2460200.5
nobs 1478
nopp 19
Years observed 1993-2023
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.699
ep 0.073
sin(ip) 0.091
Value Standard error
G 0.150
H 15.010
Mass
D 5.10 0.290
pV 0.098 0.0138
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6988 0.0728 0.0915 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.10 0.290 0.290 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.098 0.0138 0.0138 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
15.01 MPC-2023-12-04 MPC-2023-12-04 Phot