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100731 Ara Pacis (1998 DO)
Classification: Main-belt Asteroid          SPK-ID: 2100731
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1585527135568939 3.9419e-08  
a 2.774921899110339 1.4017e-08 au
q 2.334950502097945 1.1424e-07 au
i 12.91670381187531 5.4038e-06 deg
node 160.6126782901825 1.6544e-05 deg
peri 254.6509918949208 2.2963e-05 deg
M 11.44833484152473 1.567e-05 deg
tp 2458946.807404809705
(2020-Apr-07.30740481)
7.343e-05 TDB
period 1688.397005859387
4.62
1.2793e-05
3.503e-08
d
yr
n .213219994320448 1.6155e-09 deg/d
Q 3.214893296122732 1.6239e-08 au
  Orbit Determination Parameters
   # obs. used (total)      928  
   data-arc span      8012 days (21.94 yr)  
   first obs. used      1998-02-18  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54173  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:09:58  

Additional Information
 Earth MOID = 1.38409 au 
 Jupiter MOID = 2.28864 au 
 T_jup = 3.281 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO453461  
diameter diameter 3.924 km 0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.182   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100731 Ara Pacis           Discovered 1998 Feb. 18 by V. S. Casulli at Colleverde.
Ara Pacis Augustae, located in Rome, is an altar dedicated to Pax, the Roman goddess of peace. The monument was commissioned by the Roman Senate in 13 BCE to honor the return of Augustus to Rome after a three-year expedition in Hispania and Gaul.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-11-04Last Updated: 2017-11-07

[ show close-approach data ]
Alternate Designations
 1998 DO = 2001 VN94 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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