Johnspencer

07554, 1981GQ, J81G00Q

All data for this body: [vot]

MPC data
Name (number) Johnspencer (7554)
Packed designation 07554
a 3.15441
e 0.26283
i / sin(i) 13.7085 / 0.23698
q 2.32534
Q 3.98347
ω 154.5606
Node 13.4921
m 147.5369
n 0.1759
Epoch 2459600.5
nobs 1929
nopp 23
Years observed 1978-2021
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.085
ep 0.350
sin(ip) 0.220
Value Standard error
G 0.150
H 12.960
Mass
D 15.69 0.318
pV 0.054 0.0117
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0849 0.3502 0.2202 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
15.10 4.970 4.970 Masiero 2021PSJ.....2..162M NEATM
15.69 0.319 0.319 Masiero 2011ApJ...741...68M NEATM
17.73 5.540 5.540 Masiero 2021PSJ.....2..162M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.050 0.0220 0.0400 Masiero 2021PSJ.....2..162M NEATM
0.053 0.0260 0.0530 Masiero 2021PSJ.....2..162M NEATM
0.054 0.0133 0.0133 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
12.96 MPC-2022-01-18 MPC-2022-01-18 Phot