1998 QB23

1998QB23, 1999 WU2, 1999WU2, 2019 GC30, 2019GC30, 40119, J98Q23B, J99W02U, K19G30C

All data for this body: [vot]

MPC data
Name (number) 1998 QB23 (40119)
a 3.18442
e 0.13520
i / sin(i) 5.7640 / 0.10043
q 2.75390
Q 3.61494
ω 24.4418
Node 25.0338
m 193.8132
n 0.1734
Epoch 2460800.5
nobs 1597
nopp 21
Years observed 1998-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent Hygiea (10)
 
ap 3.174
ep 0.129
sin(ip) 0.097
G 0.150
H 14.110
Mass
D 8.83 0.272
pV 0.075 0.0094
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 4.704
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
3.1744 0.1292 0.0966 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.83 0.272 0.272 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.075 0.0094 0.0094 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
14.11 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 0.784 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT