1998 QX9

1998QX9, 12544, 1971 SD3, 1971SD3, 1987 OG1, 1987OG1, 1997 KJ3, 1997KJ3, J71S03D, J87O01G, J97K03J, J98Q09X

All data for this body: [vot]

MPC data
Name (number) 1998 QX9 (12544)
a 3.11787
e 0.20915
i / sin(i) 5.5037 / 0.09591
q 2.46576
Q 3.76998
ω 262.2389
Node 116.0247
m 273.8933
n 0.1790
Epoch 2460800.5
nobs 1689
nopp 26
Years observed 1971-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.111
ep 0.180
sin(ip) 0.079
G 0.150
H 14.120
Mass
D 11.95 1.929
pV 0.032 0.0121
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 4.782
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1107 0.1799 0.0794 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
11.48 3.230 3.230 Nugent 2016AJ....152...63N NEATM
11.88 3.043 3.043 Masiero 2017AJ....154..168M NEATM
12.11 4.690 4.690 Masiero 2021PSJ.....2..162M NEATM
14.28 7.170 7.170 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.026 0.0590 0.0590 Masiero 2012ApJ...759L...8M NEATM
0.030 0.0200 0.0200 Nugent 2016AJ....152...63N NEATM
0.032 0.0197 0.0197 Masiero 2017AJ....154..168M NEATM
0.038 0.0180 0.0350 Masiero 2021PSJ.....2..162M 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
14.12 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 0.797 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.2856 0.2856 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT