McKeegan

05663, 1981 EQ12, 1981EQ12, J81E12Q

All data for this body: [vot]

MPC data
Name (number) McKeegan (5663)
a 2.38875
e 0.27007
i / sin(i) 6.4554 / 0.11243
q 1.74363
Q 3.03387
ω 95.4998
Node 240.1057
m 200.3241
n 0.2670
Epoch 2460800.5
nobs 2117
nopp 25
Years observed 1978-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.390
ep 0.221
sin(ip) 0.135
G 0.150
H 14.960
Mass
D 5.20 0.291
pV 0.086 0.0173
Value
Rotational Period 4.760
Period quality 3
Spectral Class C
Spectral Class Score 3.038
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3905 0.2207 0.1349 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.66 1.040 1.040 Masiero 2021PSJ.....2..162M NEATM
4.24 0.850 0.850 Masiero 2021PSJ.....2..162M NEATM
5.49 0.324 0.324 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.071 0.0220 0.0310 Masiero 2021PSJ.....2..162M NEATM
0.093 0.0238 0.0238 Masiero 2011ApJ...741...68M NEATM
0.157 0.0620 0.1020 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
14.96 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.769 3 Synodic Benishek 2020MPBu...47...75B Lightcurve
4.769 3 Synodic Pravec LCDB Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.13 Bus VIS Carvano 2010A&A...510A..43C PHOT
C Bk None None Movis NIR Popescu 2018A&A...617A..12P PHOT
C C 0.2963 0.2963 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT