1999UL9

21876, 9569P-L, J99U09L, PLS9569

All data for this body: [vot]

MPC data
Name (number) 1999UL9 (21876)
Packed designation 21876
a 2.45812
e 0.07827
i / sin(i) 6.1195 / 0.10660
q 2.26573
Q 2.65051
ω 196.5459
Node 39.9078
m 86.3380
n 0.2557
Epoch 2459600.5
nobs 1498
nopp 20
Years observed 1960-2021
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.457
ep 0.099
sin(ip) 0.097
Value Standard error
G 0.150
H 14.710
Mass
D 5.41 0.151
pV 0.061 0.0132
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4567 0.0991 0.0965 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.38 0.153 0.153 Masiero 2011ApJ...741...68M NEATM
5.39 1.500 1.500 Masiero 2020PSJ.....1....5M NEATM
6.54 1.810 1.810 Masiero 2021PSJ.....2..162M NEATM
6.86 1.540 1.540 Masiero 2020PSJ.....1....5M NEATM
6.96 2.144 2.144 Masiero 2017AJ....154..168M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.048 0.0297 0.0297 Masiero 2017AJ....154..168M NEATM
0.049 0.0290 0.0290 Masiero 2020PSJ.....1....5M NEATM
0.054 0.0210 0.0340 Masiero 2021PSJ.....2..162M NEATM
0.080 0.0810 0.0810 Masiero 2020PSJ.....1....5M NEATM
0.080 0.0226 0.0226 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
14.71 MPC-2022-01-18 MPC-2022-01-18 Phot