1999 YL9

1999YL9, 71221, J99Y09L

All data for this body: [vot]

MPC data
Name (number) 1999 YL9 (71221)
a 2.78708
e 0.18596
i / sin(i) 7.1030 / 0.12365
q 2.26880
Q 3.30537
ω 151.2409
Node 305.1063
m 179.2491
n 0.2118
Epoch 2460800.5
nobs 832
nopp 19
Years observed 1993-2025
rms 0.81
Best values
[raw, vot]

Value Standard error
Parent Dora (668)
 
ap 2.784
ep 0.197
sin(ip) 0.138
G 0.150
H 15.270
Mass
D 5.37 0.139
pV 0.068 0.0058
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
668 Dora 0 Dora Novakovic 2019EPSC...13.1671N HCM
668 Dora 512 Dora Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7844 0.1969 0.1377 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.18 0.180 0.180 Masiero 2011ApJ...741...68M NEATM
5.65 0.218 0.218 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.067 0.0061 0.0061 Masiero 2011ApJ...741...68M NEATM
0.079 0.0203 0.0203 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
15.27 MPC-2023-12-04 MPC-2023-12-04 Phot