1998 CY4

1998CY4, 2000 QH136, 2000QH136, 31237, J98C04Y, K00QD6H

All data for this body: [vot]

MPC data
Name (number) 1998 CY4 (31237)
a 2.92333
e 0.02114
i / sin(i) 1.1826 / 0.02064
q 2.86154
Q 2.98512
ω 247.5400
Node 204.5683
m 218.1614
n 0.1972
Epoch 2460800.5
nobs 2332
nopp 24
Years observed 1993-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent Koronis (158)
 
ap 2.923
ep 0.035
sin(ip) 0.033
G 0.150
H 14.520
Mass
D 4.41 0.256
pV 0.190 0.0208
Value
Rotational Period 2.200
Period quality 2
Spectral Class S
Spectral Class Score 17.538
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
158 Koronis 0 Koronis Novakovic 2019EPSC...13.1671N HCM
158 Koronis 605 Koronis 0.3700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9231 0.0348 0.0332 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.41 0.256 0.256 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.190 0.0208 0.0208 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
14.52 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.28 Synodic Erasmus 2018ApJS..237...19E Lightcurve
2.28 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
S 0.923 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 1.000000 Bus-DeMeo VIS Erasmus 2018ApJS..237...19E PHOT
S 1.000000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT