1999 LY4

1999LY4, 31792, J99L04Y

All data for this body: [vot]

MPC data
Name (number) 1999 LY4 (31792)
a 3.12749
e 0.13217
i / sin(i) 17.3852 / 0.29879
q 2.71414
Q 3.54083
ω 19.6236
Node 186.4584
m 279.5185
n 0.1782
Epoch 2460800.5
nobs 1529
nopp 23
Years observed 1995-2025
rms 0.82
Best values
[raw, vot]

Value Standard error
Parent Tirela (1400)
 
ap 3.115
ep 0.193
sin(ip) 0.290
G 0.150
H 14.350
Mass
D 4.09 0.479
pV 0.219 0.0400
Value
Rotational Period
Period quality None
Spectral Class D
Spectral Class Score 10.876
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1400 Tirela 0 Tirela Novakovic 2019EPSC...13.1671N HCM
1400 Tirela 612 Tirela -0.0300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1150 0.1932 0.2905 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.81 1.402 1.402 Masiero 2011ApJ...741...68M NEATM
4.13 0.510 0.510 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.216 0.0410 0.0410 Masiero 2012ApJ...759L...8M NEATM
0.279 0.1832 0.1832 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
14.35 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
D DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
D D 0.4027 0.2870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D D 0.5171 0.2870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D D 0.5195 0.2870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S D 0.0944 0.2870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S D 0.2994 0.2870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S D 0.3686 0.2870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S D 0.8480 0.2870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D 0.12 Bus VIS Carvano 2010A&A...510A..43C PHOT