1998 HN68

1998HN68, 18703, 1997 EZ39, 1997EZ39, J97E39Z, J98H68N

All data for this body: [vot]

MPC data
Name (number) 1998 HN68 (18703)
a 3.20927
e 0.12273
i / sin(i) 3.3102 / 0.05774
q 2.81539
Q 3.60315
ω 20.4191
Node 271.1944
m 180.1770
n 0.1714
Epoch 2460800.5
nobs 2013
nopp 24
Years observed 1997-2025
rms 0.83
Best values
[raw, vot]

Value Standard error
Parent Hygiea (10)
 
ap 3.196
ep 0.134
sin(ip) 0.077
G 0.150
H 13.920
Mass
D 9.46 0.365
pV 0.045 0.0051
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 2.976
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
10 Hygiea 0 Hygiea Novakovic 2019EPSC...13.1671N HCM
10 Hygiea 601 Hygiea Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1960 0.1342 0.0775 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
9.46 0.365 0.365 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.045 0.0051 0.0051 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
13.92 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 0.496 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT