1991 PK8

1991PK8, 07585, 1983 AJ2, 1983AJ2, 1994 AV, 1994AV, J83A02J, J91P08K, J94A00V

All data for this body: [vot]

MPC data
Name (number) 1991 PK8 (7585)
a 3.18247
e 0.11118
i / sin(i) 13.0444 / 0.22571
q 2.82863
Q 3.53631
ω 180.2917
Node 129.4734
m 350.0455
n 0.1736
Epoch 2460800.5
nobs 4428
nopp 29
Years observed 1983-2025
rms 0.64
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.184
ep 0.102
sin(ip) 0.205
G 0.150
H 12.330
Mass
D 16.46 0.305
pV 0.073 0.0156
Value
Rotational Period 9.479
Period quality 2
Spectral Class X
Spectral Class Score 6.045
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1840 0.1023 0.2055 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
16.24 0.311 0.311 Masiero 2011ApJ...741...68M NEATM
21.94 1.680 1.680 Usui 2011PASJ...63.1117U NEATM
22.57 4.510 4.510 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.051 0.0200 0.0200 Ali-Lagoa 2018A&A...612A..85A NEATM
0.106 0.0250 0.0250 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
12.33 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
9.47908 2 Sidereal Martikainen 2021A&A...649A..98M Model
9.4791 2 Sidereal Durech 2023A&A...675A..24D Model
9.47919 2 Sidereal Durech 2018A&A...617A..57D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
X 0.364 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.6435 0.6435 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT