1991 PG9

1991PG9, 10335, J91P09G

All data for this body: [vot]

MPC data
Name (number) 1991 PG9 (10335)
a 2.79429
e 0.14954
i / sin(i) 8.9445 / 0.15548
q 2.37644
Q 3.21214
ω 133.1953
Node 182.9076
m 81.5511
n 0.2110
Epoch 2460800.5
nobs 3783
nopp 24
Years observed 1990-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.793
ep 0.127
sin(ip) 0.158
G 0.150
H 13.860
Mass
D 4.46 0.686
pV 0.353 0.1412
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 8.292
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 0.2500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7934 0.1267 0.1575 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.46 0.686 0.686 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.353 0.1412 0.1412 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
13.86 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
K 0.105 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.61 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S None None Movis NIR Popescu 2018A&A...617A..12P PHOT
S S 0.6786 0.6786 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT