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B/astorb/astorb Orbits of Minor Planets (Bowell+ 2014)
The catalog of Orbits (2014-01-05) (754954 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  (i) [1,]+ Asteroid number (blank if unnumbered)
NamePhaedra  (i) 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)   
Narc51269  Orbital arc, days, spanned by observations used in orbit computation.
Nobs1916  Number of observations used in orbit computation.
Epoch2018-03-23 "Y:M:D" Epoch of osculation, yyyymmdd (TDT) (Note 2)   
M 92.735374 deg Mean anomaly (Note 3)   
omega289.245664 deg Argument of perihelion (Note 3)   
Omega327.686777 deg Longitude of ascending node (Note 3)   
i 12.121999 deg Inclination (Note 3)   
e 0.14119772  Eccentricity (Note 3)   
a 2.86169865 AU Semimajor axis (Note 3)   
DateOrb2018-02-03 "Y:M:D" Date of orbit computation
CEU 1e-02 arcsec Current Ephemeris Uncertainty (Note 10)   
dCEU -1e-05 arcsec/d Rate of change of CEU (Note 10)   
DateCEU2018-02-18 "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)   
DatePEU12026-05-16 "Y:M:D" Date of PEU1
PEU2 4e-02 arcsec As PEU1, assuming that two observations were made at DatePEU0 (Note 11)   
DatePEU22026-05-16 "Y:M:D" Date of PEU2
mod*   [a*] added or updated (Note 12)   
modDate2018-02-12 "Y:M:D" Date of last modification (Note 12)   
  

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