Ajax

01404, 1936 QW, 1936QW, J36Q00W

All data for this body: [vot]

MPC data
Name (number) Ajax (1404)
a 5.28389
e 0.11265
i / sin(i) 18.0309 / 0.30953
q 4.68868
Q 5.87911
ω 61.8431
Node 332.8774
m 96.2015
n 0.0811
Epoch 2460800.5
nobs 4242
nopp 42
Years observed 1936-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
G 0.150
H 9.290
Mass
D 85.42 0.915
pV 0.063 0.0029
Value
Rotational Period 29.410
Period quality 3
Spectral Class X
Spectral Class Score 13.242
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
77.63 3.071 3.071 Ryan&Woodward 2010AJ....140..933R IRAS-STM
78.20 3.899 3.899 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
81.69 3.200 3.200 Tedesco 2002AJ....123.1056T STM
83.99 1.280 1.280 Grav 2012ApJ...759...49G NEATM
88.40 2.990 2.990 Grav 2011ApJ...742...40G NEATM
91.79 18.360 18.360 Ali-Lagoa 2018A&A...612A..85A NEATM
96.34 2.250 2.250 Usui 2011PASJ...63.1117U NEATM
98.64 19.730 19.730 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.039 0.0160 0.0160 Ali-Lagoa 2018A&A...612A..85A NEATM
0.043 0.0080 0.0080 Grav 2011ApJ...742...40G NEATM
0.045 0.0180 0.0180 Ali-Lagoa 2018A&A...612A..85A NEATM
0.048 0.0090 0.0090 Grav 2012ApJ...759...49G NEATM
0.067 0.0050 0.0050 Tedesco 2002AJ....123.1056T STM
0.073 0.0074 0.0074 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.074 0.0059 0.0059 Ryan&Woodward 2010AJ....140..933R IRAS-STM
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
9.29 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
28.4 1 Synodic Binzel 1992Icar...95..222B Lightcurve
29.38 3- Synodic French 2011MPBu...38..116F Lightcurve
29.3874 2 Sidereal Durech 2019A&A...631A...2D Model
29.411 3 Synodic Dose 2021MPBu...48...69D Lightcurve
34.0 2- Synodic Behrend LCDB Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D X 0.3950 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.5608 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.6462 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT