1998 JC4

1998JC4, 17854, 1992 HT4, 1992HT4, J92H04T, J98J04C

All data for this body: [vot]

MPC data
Name (number) 1998 JC4 (17854)
a 3.06926
e 0.07506
i / sin(i) 8.9518 / 0.15560
q 2.83888
Q 3.29965
ω 214.1069
Node 213.3414
m 172.4055
n 0.1833
Epoch 2460800.5
nobs 4010
nopp 24
Years observed 1992-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 3.067
ep 0.070
sin(ip) 0.166
G 0.150
H 12.680
Mass
D 10.13 0.138
pV 0.143 0.0213
Value
Rotational Period 8.855
Period quality 2
Spectral Class L
Spectral Class Score 7.074
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 0 Eos Novakovic 2019EPSC...13.1671N HCM
221 Eos 606 Eos 0.9200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0667 0.0698 0.1655 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.13 0.138 0.138 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.143 0.0213 0.0213 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
12.68 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
8.8553 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
A DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
L 0.95 Bus VIS Carvano 2010A&A...510A..43C PHOT
L L 0.8624 0.1400 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S L 0.3390 0.1400 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X 0.916 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT