1991 PK1

1991PK1, 11523, J91P01K

All data for this body: [vot]

MPC data
Name (number) 1991 PK1 (11523)
a 2.54455
e 0.19401
i / sin(i) 14.8183 / 0.25576
q 2.05089
Q 3.03820
ω 253.0045
Node 134.9966
m 78.2648
n 0.2428
Epoch 2460800.5
nobs 5343
nopp 23
Years observed 1991-2025
rms 0.51
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.545
ep 0.148
sin(ip) 0.250
G 0.150
H 14.330
Mass
D 4.05 0.666
pV 0.320 0.0982
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 8.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5450 0.1481 0.2499 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.97 1.043 1.043 Masiero 2011ApJ...741...68M NEATM
4.11 0.865 0.865 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.316 0.1094 0.1094 Masiero 2011ApJ...741...68M NEATM
0.339 0.2232 0.2232 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
14.33 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
L 0.26 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT
X DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT