1991 VJ9

1991VJ9, 1998 FZ145, 1998FZ145, 55756, J91V09J, J98FE5Z

All data for this body: [vot]

MPC data
Name (number) 1991 VJ9 (55756)
a 2.91601
e 0.17359
i / sin(i) 10.4669 / 0.18167
q 2.40982
Q 3.42221
ω 70.1140
Node 56.7658
m 196.8826
n 0.1979
Epoch 2460800.5
nobs 1606
nopp 17
Years observed 1991-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.917
ep 0.188
sin(ip) 0.174
G 0.150
H 14.650
Mass
D 7.52 0.511
pV 0.038 0.0104
Value
Rotational Period
Period quality None
Spectral Class X
Spectral Class Score 9.541
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9168 0.1882 0.1740 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.49 0.522 0.522 Masiero 2011ApJ...741...68M NEATM
8.07 2.500 2.500 Masiero 2020PSJ.....1....5M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.038 0.0109 0.0109 Masiero 2011ApJ...741...68M NEATM
0.043 0.0360 0.0360 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
14.65 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
CX 0.39 Bus VIS Carvano 2010A&A...510A..43C PHOT
X X 0.2709 0.5900 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.6051 0.5900 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.7141 0.5900 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT