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13923 Peterhof (1985 UA5)
Classification: Main-belt Asteroid          SPK-ID: 2013923
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2062036904369524 7.2585e-08  
a 2.667754869239749 1.9344e-08 au
q 2.117653970021363 2.0027e-07 au
i 15.46144446106292 7.4059e-06 deg
node 58.91286727126129 2.2556e-05 deg
peri 337.339024440785 2.6748e-05 deg
M 340.0587888590127 1.7079e-05 deg
tp 2457488.658935981041
(2016-Apr-10.15893598)
7.6033e-05 JED
period 1591.539086005748
4.36
1.731e-05
4.739e-08
d
yr
n .2261961413109146 2.4602e-09 deg/d
Q 3.217855768458134 2.3333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      991  
   data-arc span      11010 days (30.14 yr)  
   first obs. used      1985-10-22  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48979  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:25:49  

Additional Information
 Earth MOID = 1.13257 au 
 Jupiter MOID = 2.21328 au 
 T_jup = 3.301 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO347635  

13923 Peterhof           Discovered 1985 Oct. 22 by L. V. Zhuravleva at the Crimean Astrophysical Observatory.
Peterhof, celebrating its 300th anniversary in 2005, was founded near St. Petersburg as a royal seaside summer residence. It later acquired worldwide fame for its fundamental unity of architecture, gardens and engineering arts. Nowadays, the town of Peterhof is a developing scientific and educational center.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

[ show close-approach data ]
Alternate Designations
 1985 UA5 = 1998 VO16 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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