1998 HN9

1998HN9, 2002 CB39, 2002CB39, F5442, J98H09N, K02C39B

All data for this body: [vot]

MPC data
Name (number) 1998 HN9 (155442)
a 2.76219
e 0.09607
i / sin(i) 9.9545 / 0.17287
q 2.49683
Q 3.02755
ω 338.9809
Node 136.6608
m 56.3341
n 0.2147
Epoch 2460800.5
nobs 925
nopp 17
Years observed 1998-2025
rms 0.79
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.762
ep 0.122
sin(ip) 0.158
G 0.150
H 15.810
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 6.607
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1272 Gefion 0 Gefion Novakovic 2019EPSC...13.1671N HCM
1272 Gefion 516 Gefion -0.2300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7623 0.1218 0.1580 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
15.81 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
S 0.669 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.4322 0.4322 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT