Hedwig

00476, 1901 QB, 1901QB, 1974 PL, 1974PL, J01Q00B, J74P00L

All data for this body: [vot]

MPC data
Name (number) Hedwig (476)
a 2.64942
e 0.07490
i / sin(i) 10.9253 / 0.18953
q 2.45097
Q 2.84787
ω 0.5850
Node 286.1794
m 288.1668
n 0.2285
Epoch 2460800.5
nobs 7840
nopp 67
Years observed 1901-2025
rms 0.54
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.650
ep 0.073
sin(ip) 0.206
G 0.150
H 8.670
Mass 1.966e+18 7.061e+17
D 129.04 0.758
pV 0.046 0.0014
Value
Rotational Period 27.300
Period quality 3
Spectral Class Xk
Spectral Class Score 21.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6496 0.0727 0.2056 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Mass data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.6300e+18 Folkner 2014IPNPR.196C...1F Ephem
2.3020e+18 9.9855e+17 9.9855e+17 Fienga INPOP19a Ephem
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
106.15 27.050 27.050 Nugent 2016AJ....152...63N NEATM
106.47 21.290 21.290 Ali-Lagoa 2018A&A...612A..85A NEATM
108.81 26.698 26.698 Masiero 2017AJ....154..168M NEATM
111.06 1.540 1.540 Usui 2011PASJ...63.1117U NEATM
115.06 26.440 26.440 Nugent 2016AJ....152...63N NEATM
116.76 2.600 2.600 Tedesco 2002AJ....123.1056T STM
118.93 11.890 11.890 Ali-Lagoa 2018A&A...612A..85A NEATM
119.92 32.100 32.100 Masiero 2020PSJ.....1....5M NEATM
123.71 47.080 47.080 Masiero 2021PSJ.....2..162M NEATM
123.78 32.090 32.090 Masiero 2020PSJ.....1....5M NEATM
124.02 5.835 5.835 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
124.61 4.018 4.018 Ryan&Woodward 2010AJ....140..933R IRAS-STM
138.49 0.970 0.970 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.035 0.0050 0.0050 Masiero 2012ApJ...759L...8M NEATM
0.043 0.0028 0.0028 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.044 0.0040 0.0040 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.044 0.0260 0.0260 Masiero 2020PSJ.....1....5M NEATM
0.044 0.0270 0.0270 Masiero 2020PSJ.....1....5M NEATM
0.045 0.0210 0.0410 Masiero 2021PSJ.....2..162M NEATM
0.049 0.0100 0.0100 Ali-Lagoa 2018A&A...612A..85A NEATM
0.049 0.0020 0.0020 Tedesco 2002AJ....123.1056T STM
0.050 0.0200 0.0200 Nugent 2016AJ....152...63N NEATM
0.050 0.0400 0.0400 Nugent 2016AJ....152...63N NEATM
0.052 0.0250 0.0250 Masiero 2017AJ....154..168M NEATM
0.061 0.0240 0.0240 Ali-Lagoa 2018A&A...612A..85A 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
8.67 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
27.246 Synodic Marciniak 2015P&SS..118..256M Lightcurve
27.246 2 Synodic Ferrais 2022MPBu...49..307F Lightcurve
27.33 2- Synodic Behrend LCDB Lightcurve
27.33 3 Synodic Schober 1985A&AS...62..187S Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.990000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
P Howell VISNIR Howell 1994JGR....9910847H PHOT
P Tholen VIS Fornasier 2014Icar..233..163F SPEC
P 0.990000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S Bus VIS Bus 2002Icar..158..146B SPEC
X Bus VIS Fornasier 2014Icar..233..163F SPEC
X 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
Xk Bus-DeMeo VISNIR Hasegawa 2017PASJ...69...99H SPEC