1998 HR18

1998HR18, 1994 CW7, 1994CW7, 74028, J94C07W, J98H18R

All data for this body: [vot]

MPC data
Name (number) 1998 HR18 (74028)
a 2.38967
e 0.21446
i / sin(i) 4.3873 / 0.07650
q 1.87719
Q 2.90216
ω 276.6519
Node 349.8426
m 68.1158
n 0.2668
Epoch 2460800.5
nobs 1234
nopp 20
Years observed 1994-2024
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent Erigone (163)
 
ap 2.391
ep 0.210
sin(ip) 0.088
G 0.150
H 16.070
Mass
D 3.89 0.145
pV 0.054 0.0097
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 0.471
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
163 Erigone 0 Erigone Novakovic 2019EPSC...13.1671N HCM
163 Erigone 406 Erigone 0.8500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3912 0.2104 0.0883 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.49 0.770 0.770 Masiero 2020PSJ.....1....5M NEATM
3.85 0.980 0.980 Masiero 2020PSJ.....1....5M NEATM
3.91 0.151 0.151 Masiero 2011ApJ...741...68M NEATM
3.96 0.990 0.990 Masiero 2021PSJ.....2..162M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.047 0.0180 0.0290 Masiero 2021PSJ.....2..162M NEATM
0.052 0.0300 0.0300 Masiero 2020PSJ.....1....5M NEATM
0.055 0.0117 0.0117 Masiero 2011ApJ...741...68M NEATM
0.063 0.0530 0.0530 Masiero 2020PSJ.....1....5M 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
16.07 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 C 0.0785 0.0785 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT