Kalchas

04138, 1973 SM, 1973SM, 1986 VU6, 1986VU6, J73S00M, J86V06U

All data for this body: [vot]

MPC data
Name (number) Kalchas (4138)
a 5.17736
e 0.04364
i / sin(i) 2.0976 / 0.03660
q 4.95142
Q 5.40331
ω 167.3483
Node 207.9964
m 138.6108
n 0.0837
Epoch 2460800.5
nobs 5188
nopp 36
Years observed 1956-2025
rms 0.64
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
G 0.150
H 10.150
Mass
D 46.50 0.443
pV 0.080 0.0053
Value
Rotational Period 29.000
Period quality 3
Spectral Class P
Spectral Class Score 11.510
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
46.07 0.600 0.600 Grav 2011ApJ...742...40G NEATM
46.46 0.670 0.670 Grav 2012ApJ...759...49G NEATM
61.04 3.490 3.490 Usui 2011PASJ...63.1117U NEATM
62.54 12.510 12.510 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.049 0.0200 0.0200 Ali-Lagoa 2018A&A...612A..85A NEATM
0.082 0.0060 0.0060 Grav 2012ApJ...759...49G NEATM
0.083 0.0130 0.0130 Grav 2011ApJ...742...40G 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
10.15 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
29.13 2+ Synodic Ryan 2017AJ....153..116R Lightcurve
29.2 3 Synodic French 2012MPBu...39..183F Lightcurve
29.411 2+ Synodic Szabo 2017A&A...599A..44S Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
P Jewitt-Luu VIS Bendjoya 2004Icar..168..374B SPEC
P 0.930000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
X 0.330 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.9178 0.9178 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT