1998 HT12

1998HT12, 1987 FH1, 1987FH1, 1991 JD5, 1991JD5, 2000 WA11, 2000WA11, 39979, J87F01H, J91J05D, J98H12T, K00W11A

All data for this body: [vot]

MPC data
Name (number) 1998 HT12 (39979)
a 2.37851
e 0.22016
i / sin(i) 24.8348 / 0.42000
q 1.85485
Q 2.90217
ω 29.2051
Node 71.2146
m 211.9539
n 0.2687
Epoch 2460800.5
nobs 3240
nopp 19
Years observed 1991-2025
rms 0.58
Best values
[raw, vot]

Value Standard error
Parent Phocaea (25)
 
ap 2.377
ep 0.218
sin(ip) 0.398
G 0.150
H 14.030
Mass
D 5.32 0.337
pV 0.219 0.0467
Value
Rotational Period 8.100
Period quality 2
Spectral Class S
Spectral Class Score 12.010
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
25 Phocaea 0 Phocaea Novakovic 2019EPSC...13.1671N HCM
25 Phocaea 701 Phocaea -0.2200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3775 0.2181 0.3976 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.41 1.270 1.270 Nugent 2016AJ....152...63N NEATM
5.39 0.349 0.349 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.210 0.1300 0.1300 Nugent 2016AJ....152...63N NEATM
0.221 0.0500 0.0500 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
14.03 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
8.103 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
LS 0.78 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.943 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.7253 0.7253 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT