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B/astorb/astorb Orbits of Minor Planets (Bowell+ 2014)
The catalog of Orbits (2014-01-05) (745732 rows)
  Planet=174
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Note: This is a copy of the Asteroid Observing Services from the Asteroid Database at Lowell Observatory

ColumnValue  Explain   (UCD)
recno 174  Record number assigned by the VizieR team. Should Not be used for identification.

Planet 174   [1,]+ Asteroid number (blank if unnumbered)
NamePhaedra  Name or preliminary designation.
CompNameL.H. Wasserman  Orbit Computer.
H 8.48 mag Absolute magnitude H parameter (Note 1)   
G 0.15  Slope magnitude parameter (Note 1)   
B-V 0.86 mag Color index (see E.F.Tedesco, pp.1090-1138)
Diam 69.2 km IRAS diameter (see E.F.Tedesco, pp.1151-1161; catalog II/190)
IRAScl   IRAS Taxonomic classification

EphemEphem  Show the Ephemeride of this Asteroid (from IMCCE)

Xflg 0   [0/31] Planet-crossing code (Note 4)   
Oflg 0   [0/255] Orbit computation code (Note 5)   
Sflg 0   [0/31] Survey observation code (Note 6)   
MPCC 0   [0/7] MPC critical-list code (Note 7)   
LowC 0   [0/5] Lowell Observatory discovery code (Note 8)   
FlaC 0   [0/10] Flagstaff Station Code (Note 9)   
Narc51194  Orbital arc, days, spanned by observations used in orbit computation.
Nobs1812  Number of observations used in orbit computation.
Epoch2017-12-13 "Y:M:D" Epoch of osculation, yyyymmdd (TDT) (Note 2)   
M 72.410805 deg Mean anomaly (Note 3)   
omega289.209631 deg Argument of perihelion (Note 3)   
Omega327.688405 deg Longitude of ascending node (Note 3)   
i 12.122650 deg Inclination (Note 3)   
e 0.14118527  Eccentricity (Note 3)   
a 2.86144795 AU Semimajor axis (Note 3)   
DateOrb2017-11-10 "Y:M:D" Date of orbit computation
CEU 2e-02 arcsec Current Ephemeris Uncertainty (Note 10)   
dCEU -8e-05 arcsec/d Rate of change of CEU (Note 10)   
DateCEU2017-12-10 "Y:M:D" Date of CEU
PEU0 3e-02 arcsec Next Peak Ephemeris Uncertainty (PEU) (Note 11)   
DatePEU02018-11-11 "Y:M:D" Date of PEU0
PEU1 4e-02 arcsec Largest PEU in 10 years from DatePEU0 (Note 11)   
DatePEU12026-05-15 "Y:M:D" Date of PEU1
PEU2 4e-02 arcsec As PEU1, assuming that two observations were made at DatePEU0 (Note 11)   
DatePEU22026-05-15 "Y:M:D" Date of PEU2
moda   [a*] added or updated (Note 12)   
modDate2017-12-11 "Y:M:D" Date of last modification (Note 12)   
  

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