1998 HK109

1998HK109, 2000 SS256, 2000SS256, 55958, J98HA9K, K00SP6S

All data for this body: [vot]

MPC data
Name (number) 1998 HK109 (55958)
a 3.17830
e 0.12244
i / sin(i) 27.9650 / 0.46893
q 2.78916
Q 3.56745
ω 1.4183
Node 185.8975
m 305.0248
n 0.1739
Epoch 2460800.5
nobs 1553
nopp 22
Years observed 1992-2025
rms 0.78
Best values
[raw, vot]

Value Standard error
Parent Euphrosyne (31)
 
ap 3.168
ep 0.221
sin(ip) 0.447
G 0.150
H 14.190
Mass
D 8.44 0.122
pV 0.064 0.0057
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 6.691
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
31 Euphrosyne 0 Euphrosyne Novakovic 2019EPSC...13.1671N HCM
31 Euphrosyne 901 Euphrosyne Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1679 0.2208 0.4468 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.43 0.122 0.122 Masiero 2011ApJ...741...68M NEATM
9.38 3.690 3.690 Nugent 2016AJ....152...63N NEATM
9.86 2.890 2.890 Nugent 2016AJ....152...63N NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.030 0.0200 0.0200 Nugent 2016AJ....152...63N NEATM
0.040 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM
0.068 0.0061 0.0061 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
14.19 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C C 0.7819 0.6870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
CX 0.28 Bus VIS Carvano 2010A&A...510A..43C PHOT
D C 0.0226 0.6870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D C 0.0328 0.6870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D C 0.0731 0.6870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X C 0.1109 0.6870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT