1998 SM121

1998SM121, 2000 EY91, 2000EY91, 49212, J98SC1M, K00E91Y

All data for this body: [vot]

MPC data
Name (number) 1998 SM121 (49212)
a 2.29412
e 0.05555
i / sin(i) 3.9770 / 0.06936
q 2.16668
Q 2.42156
ω 240.5576
Node 258.1787
m 310.2617
n 0.2836
Epoch 2460200.5
nobs 2070
nopp 19
Years observed 1998-2023
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.294
ep 0.099
sin(ip) 0.082
Value Standard error
G 0.150
H 15.150
Mass
D 2.34 0.279
pV 0.388 0.1024
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2942 0.0994 0.0821 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.34 0.279 0.279 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.388 0.1024 0.1024 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
15.15 MPC-2023-12-04 MPC-2023-12-04 Phot