1998 HG97

1998HG97, 19479, 1987 KA3, 1987KA3, J87K03A, J98H97G

All data for this body: [vot]

MPC data
Name (number) 1998 HG97 (19479)
a 3.12394
e 0.18512
i / sin(i) 5.9230 / 0.10319
q 2.54565
Q 3.70223
ω 261.0026
Node 51.9218
m 241.3283
n 0.1785
Epoch 2460800.5
nobs 2284
nopp 25
Years observed 1987-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.133
ep 0.161
sin(ip) 0.094
G 0.150
H 13.800
Mass
D 9.12 0.112
pV 0.074 0.0113
Value
Rotational Period 39.084
Period quality 2
Spectral Class C
Spectral Class Score 8.973
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1332 0.1612 0.0938 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.21 3.330 3.330 Masiero 2012ApJ...759L...8M NEATM
10.27 3.255 3.255 Masiero 2017AJ....154..168M NEATM
9.11 0.112 0.112 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.045 0.0276 0.0276 Masiero 2017AJ....154..168M NEATM
0.062 0.0720 0.0720 Masiero 2012ApJ...759L...8M NEATM
0.080 0.0126 0.0126 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
13.80 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
39.0847 2 Sidereal Durech 2018A&A...617A..57D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
B B 0.5316 0.5220 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.11 Bus VIS Carvano 2010A&A...510A..43C PHOT
C 0.911 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C B 0.0478 0.5220 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C Cgx None None Movis NIR Popescu 2018A&A...617A..12P PHOT