Phaedra

00174, 1877 RA, 1877RA, I77R00A

All data for this body: [vot]

MPC data
Name (number) Phaedra (174)
a 2.85844
e 0.14527
i / sin(i) 12.1043 / 0.20969
q 2.44318
Q 3.27369
ω 290.9822
Node 327.2649
m 260.4390
n 0.2039
Epoch 2460800.5
nobs 8653
nopp 62
Years observed 1877-2025
rms 0.53
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.860
ep 0.158
sin(ip) 0.229
G 0.150
H 8.400
Mass
D 64.29 0.332
pV 0.158 0.0078
Value
Rotational Period 5.740
Period quality 3
Spectral Class S
Spectral Class Score 35.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
174 Phaedra -1 Phaedra -1.0000 Nesvorny 2024ApJS..274...25N HCM-2024
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8601 0.1579 0.2285 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
48.64 1.600 1.600 Masiero 2012ApJ...759L...8M NEATM
62.00 6.200 6.200 Ali-Lagoa 2018A&A...612A..85A NEATM
64.08 0.770 0.770 Usui 2011PASJ...63.1117U NEATM
64.85 0.390 0.390 Masiero 2014ApJ...791..121M NEATM
67.76 4.210 4.210 Ryan&Woodward 2010AJ....140..933R IRAS-STM
69.24 4.400 4.400 Tedesco 2002AJ....123.1056T STM
70.24 3.051 3.051 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
71.77 7.180 7.180 Ali-Lagoa 2018A&A...612A..85A NEATM
74.40 2.475 2.475 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.150 0.0300 0.0300 Ali-Lagoa 2018A&A...612A..85A NEATM
0.130 0.0212 0.0212 Masiero 2011ApJ...741...68M NEATM
0.146 0.0133 0.0133 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.149 0.0210 0.0210 Tedesco 2002AJ....123.1056T STM
0.168 0.0256 0.0256 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.170 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM
0.201 0.0400 0.0400 Ali-Lagoa 2018A&A...612A..85A NEATM
0.303 0.0400 0.0400 Masiero 2012ApJ...759L...8M 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
8.40 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
5.7396 3- Synodic Fornas LCDB Lightcurve
5.74 2 Synodic Wang 2002EM&P...91..181W Lightcurve
5.744 3 Synodic Sada 2001MPBu...28...39S Lightcurve
5.7487 3 Synodic Behrend LCDB Lightcurve
5.75 2 Synodic Magnusson 1991A&AS...87..269M Lightcurve
5.75 2 Synodic Marciniak 2011A&A...529A.107M Lightcurve
5.75 3 Synodic Iowa LCDB Lightcurve
5.75 3 Synodic Ivarsen 2004MPBu...31...29I Lightcurve
5.75 3 Synodic Ruthroff 2009MPBu...36..121R Lightcurve
5.75025 2 Sidereal Durech 2023A&A...675A..24D Model
5.75025 2 Sidereal Durech LCDB Model
5.75025 2 Sidereal Hanus 2011A&A...530A.134H Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S Bus-DeMeo VISNIR Hasegawa 2024AJ....167..224H SPEC
S Bus VIS Bus 2002Icar..158..146B SPEC
S Tholen VIS Clark 1995Icar..113..387C PHOT
S 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC