1998 HT4

1998HT4, 44108, J98H04T

All data for this body: [vot]

MPC data
Name (number) 1998 HT4 (44108)
a 2.25717
e 0.06181
i / sin(i) 5.8925 / 0.10266
q 2.11765
Q 2.39669
ω 225.9554
Node 47.7287
m 294.9675
n 0.2906
Epoch 2460800.5
nobs 3079
nopp 22
Years observed 1982-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.257
ep 0.061
sin(ip) 0.092
G 0.150
H 14.650
Mass
D
pV
Value
Rotational Period 2.200
Period quality 2
Spectral Class S
Spectral Class Score 11.640
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2574 0.0607 0.0921 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
14.65 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.25 2 Synodic Erasmus 2018ApJS..237...19E Lightcurve
2.25 2 Synodic Erasmus 2019ApJS..242...15E Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
A 0.383 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 0.968000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT
S 0.972000 Bus-DeMeo VIS Erasmus 2018ApJS..237...19E PHOT