1999 SQ4

1999SQ4, 1986 HU, 1986HU, 1997 GX42, 1997GX42, 38439, J86H00U, J97G42X, J99S04Q

All data for this body: [vot]

MPC data
Name (number) 1999 SQ4 (38439)
a 3.09739
e 0.01360
i / sin(i) 15.5370 / 0.26786
q 3.05526
Q 3.13952
ω 67.4546
Node 200.5807
m 0.6371
n 0.1808
Epoch 2460800.5
nobs 2866
nopp 24
Years observed 1986-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.097
ep 0.035
sin(ip) 0.273
G 0.150
H 13.460
Mass
D 6.46 0.179
pV 0.244 0.0405
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 11.189
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0970 0.0351 0.2733 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.46 0.179 0.179 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.244 0.0405 0.0405 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
13.46 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
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.47 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.5387 0.5740 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.8362 0.5740 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT