1999 LL9

1999LL9, 31794, J99L09L

All data for this body: [vot]

MPC data
Name (number) 1999 LL9 (31794)
a 2.76547
e 0.17684
i / sin(i) 8.9667 / 0.15586
q 2.27641
Q 3.25453
ω 287.5954
Node 124.1731
m 68.7607
n 0.2143
Epoch 2460800.5
nobs 3315
nopp 21
Years observed 1998-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.767
ep 0.147
sin(ip) 0.142
G 0.150
H 13.820
Mass
D 10.42 0.228
pV 0.061 0.0147
Value
Rotational Period
Period quality None
Spectral Class X
Spectral Class Score 1.020
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7672 0.1469 0.1424 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.44 0.230 0.230 Masiero 2012ApJ...759L...8M NEATM
9.12 2.830 2.830 Masiero 2021PSJ.....2..162M NEATM
9.43 2.470 2.470 Nugent 2016AJ....152...63N NEATM
9.85 2.880 2.880 Masiero 2021PSJ.....2..162M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.048 0.0250 0.0510 Masiero 2021PSJ.....2..162M NEATM
0.060 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM
0.060 0.0340 0.0800 Masiero 2021PSJ.....2..162M NEATM
0.065 0.0200 0.0200 Masiero 2012ApJ...759L...8M 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
13.82 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
X 0.170 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT