1998 HY6

1998HY6, 1999 QM, 1999QM, 39975, J98H06Y, J99Q00M

All data for this body: [vot]

MPC data
Name (number) 1998 HY6 (39975)
a 2.37951
e 0.11907
i / sin(i) 5.8343 / 0.10165
q 2.09617
Q 2.66284
ω 135.2055
Node 52.5531
m 137.3874
n 0.2685
Epoch 2460800.5
nobs 3009
nopp 21
Years observed 1998-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.380
ep 0.157
sin(ip) 0.089
G 0.150
H 14.810
Mass
D 2.89 0.642
pV 0.336 0.0852
Value
Rotational Period
Period quality None
Spectral Class V
Spectral Class Score 20.011
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3799 0.1572 0.0894 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.89 0.642 0.642 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.336 0.0852 0.0852 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
14.81 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
V DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
V 0.74 Bus VIS Carvano 2010A&A...510A..43C PHOT
V 0.772 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
V V 0.9833 0.9940 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.9999 0.9940 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT