Hedda

00207, 1879 UA, 1879UA, 1932 CL1, 1932CL1, 1934 XJ, 1934XJ, 1953 BF, 1953BF, I79U00A, J32C01L, J34X00J, J53B00F

All data for this body: [vot]

MPC data
Name (number) Hedda (207)
a 2.28484
e 0.02866
i / sin(i) 3.7999 / 0.06627
q 2.21935
Q 2.35032
ω 192.2099
Node 29.1183
m 229.4894
n 0.2854
Epoch 2460800.5
nobs 12338
nopp 58
Years observed 1885-2025
rms 0.49
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.284
ep 0.070
sin(ip) 0.063
G 0.150
H 10.260
Mass
D 55.62 0.010
pV 0.043 0.0013
Value
Rotational Period 30.090
Period quality 3
Spectral Class Ch
Spectral Class Score 31.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2840 0.0698 0.0634 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
51.57 0.013 0.013 Ryan&Woodward 2010AJ....140..933R MSX-STM
56.66 17.411 17.411 Masiero 2017AJ....154..168M NEATM
57.88 0.150 0.150 Masiero 2014ApJ...791..121M NEATM
58.00 5.800 5.800 Ali-Lagoa 2018A&A...612A..85A NEATM
58.08 17.000 17.000 Masiero 2020PSJ.....1....5M NEATM
58.70 1.300 1.300 Tedesco 2002AJ....123.1056T STM
58.74 14.740 14.740 Masiero 2020PSJ.....1....5M NEATM
59.54 11.280 11.280 Masiero 2020PSJ.....1....5M NEATM
59.65 10.772 10.772 Masiero 2017AJ....154..168M NEATM
60.12 21.900 21.900 Masiero 2021PSJ.....2..162M NEATM
60.50 18.430 18.430 Masiero 2021PSJ.....2..162M NEATM
61.31 1.154 1.154 Masiero 2011ApJ...741...68M NEATM
61.66 0.016 0.016 Ryan&Woodward 2010AJ....140..933R MSX-NEATM
61.76 1.572 1.572 Ryan&Woodward 2010AJ....140..933R IRAS-STM
63.59 20.600 20.600 Masiero 2021PSJ.....2..162M NEATM
63.87 3.313 3.313 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
63.91 1.000 1.000 Usui 2011PASJ...63.1117U NEATM
66.32 27.840 27.840 Masiero 2012ApJ...759L...8M NEATM
73.08 10.410 10.410 Nugent 2016AJ....152...63N NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.030 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM
0.032 0.0180 0.0180 Masiero 2012ApJ...759L...8M NEATM
0.033 0.0140 0.0250 Masiero 2021PSJ.....2..162M NEATM
0.034 0.0019 0.0019 Masiero 2011ApJ...741...68M NEATM
0.035 0.0150 0.0150 Masiero 2020PSJ.....1....5M NEATM
0.035 0.0140 0.0250 Masiero 2021PSJ.....2..162M NEATM
0.037 0.0210 0.0210 Masiero 2020PSJ.....1....5M NEATM
0.038 0.0148 0.0148 Masiero 2017AJ....154..168M NEATM
0.038 0.0250 0.0250 Masiero 2020PSJ.....1....5M NEATM
0.038 0.0170 0.0330 Masiero 2021PSJ.....2..162M NEATM
0.044 0.0313 0.0313 Masiero 2017AJ....154..168M NEATM
0.047 0.0050 0.0050 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.050 0.0026 0.0026 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.050 Ryan&Woodward 2010AJ....140..933R MSX-NEATM
0.055 0.0110 0.0110 Ali-Lagoa 2018A&A...612A..85A NEATM
0.055 0.0030 0.0030 Tedesco 2002AJ....123.1056T STM
0.060 0.0100 0.0100 Masiero 2014ApJ...791..121M NEATM
0.071 Ryan&Woodward 2010AJ....140..933R MSX-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
10.26 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
12.0 1 Synodic Behrend LCDB Lightcurve
13.57 2- Synodic Behrend LCDB Lightcurve
30.098 3 Synodic Pilcher 2010MPBu...37...21P Lightcurve
30.105 2 Sidereal Durech 2020A&A...643A..59D Model
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 Tatsumi 2022A&A...664A.107T SPEC
C 1.000000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
C 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
C C 0.5883 0.5883 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
Caa Tholen VIS Lazzaro 2004Icar..172..179L SPEC
Cgh Bus-DeMeo VISNIR Bourdelle de Micas 2022A&A...665A..83B SPEC
Ch Bus-DeMeo VISNIR Hasegawa 2024AJ....167..224H SPEC
Ch Bus VIS Bus 2002Icar..158..146B SPEC
Ch Bus VIS Lazzaro 2004Icar..172..179L SPEC