1999 YJ4

1999YJ4, 38604, J99Y04J

All data for this body: [vot]

MPC data
Name (number) 1999 YJ4 (38604)
a 3.05304
e 0.08015
i / sin(i) 10.8452 / 0.18816
q 2.80834
Q 3.29775
ω 50.6237
Node 98.0078
m 175.1845
n 0.1848
Epoch 2460800.5
nobs 2075
nopp 22
Years observed 1997-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.055
ep 0.103
sin(ip) 0.169
G 0.150
H 13.850
Mass
D
pV
Value
Rotational Period 4.670
Period quality 2
Spectral Class S
Spectral Class Score 3.455
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0546 0.1028 0.1685 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
13.85 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.66975 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
Ds Ds None None Movis NIR Popescu 2018A&A...617A..12P PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.2425 0.2425 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X 0.192 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
XL 0.19 Bus VIS Carvano 2010A&A...510A..43C PHOT