Hajek

01995, 1941 EA, 1941EA, 1971 UP1, 1971UP1, J41E00A, J71U01P

All data for this body: [vot]

MPC data
Name (number) Hajek (1995)
a 2.52891
e 0.05218
i / sin(i) 10.8192 / 0.18771
q 2.39696
Q 2.66087
ω 134.4914
Node 47.1865
m 332.3543
n 0.2451
Epoch 2460800.5
nobs 4080
nopp 32
Years observed 1941-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.530
ep 0.091
sin(ip) 0.174
G 0.150
H 13.230
Mass
D 12.86 0.269
pV 0.048 0.0086
Value
Rotational Period 10.000
Period quality 1+
Spectral Class X
Spectral Class Score 31.610
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5296 0.0915 0.1743 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.26 2.760 2.760 Nugent 2016AJ....152...63N NEATM
11.26 3.730 3.730 Masiero 2021PSJ.....2..162M NEATM
11.37 3.138 3.138 Masiero 2017AJ....154..168M NEATM
12.12 4.535 4.535 Masiero 2017AJ....154..168M NEATM
12.40 3.690 3.690 Masiero 2020PSJ.....1....5M NEATM
12.62 2.520 2.520 Ali-Lagoa 2018A&A...612A..85A NEATM
12.68 0.288 0.288 Masiero 2011ApJ...741...68M NEATM
14.45 2.580 2.580 Masiero 2012ApJ...759L...8M NEATM
15.29 1.040 1.040 Usui 2011PASJ...63.1117U NEATM
17.97 3.590 3.590 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.031 0.0120 0.0120 Ali-Lagoa 2018A&A...612A..85A NEATM
0.040 0.0250 0.0250 Masiero 2012ApJ...759L...8M NEATM
0.058 0.0500 0.0500 Masiero 2020PSJ.....1....5M NEATM
0.064 0.0260 0.0260 Ali-Lagoa 2018A&A...612A..85A NEATM
0.070 0.0320 0.0590 Masiero 2021PSJ.....2..162M NEATM
0.079 0.0499 0.0499 Masiero 2017AJ....154..168M NEATM
0.080 0.0600 0.0600 Nugent 2016AJ....152...63N NEATM
0.083 0.0249 0.0249 Masiero 2011ApJ...741...68M NEATM
0.092 0.0458 0.0458 Masiero 2017AJ....154..168M 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
13.23 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
10.0 1+ 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
C Tholen VIS Hicks 1998Icar..133...69H SPEC
C S Tholen VIS Hicks 1998Icar..133...69H SPEC
C X 0.3152 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C X 0.5374 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C X 0.6168 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D X 0.6319 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L 0.772 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S X 0.2270 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
X Tholen VIS Xu 1995Icar..115....1X SPEC
X 0.39 Bus VIS Carvano 2010A&A...510A..43C PHOT
X X 0.2904 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.4962 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.6882 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.7982 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.8466 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.8521 0.3840 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT