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7061 Pieri (1991 PE1)
Classification: Main-belt Asteroid          SPK-ID: 2007061
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2535624700148861 6.8892e-08  
a 3.125830711803489 2.7753e-08 au
q 2.333237355670206 2.1114e-07 au
i 18.96700023894867 7.7443e-06 deg
node 137.5361676995168 2.0905e-05 deg
peri 173.6999762085123 2.458e-05 deg
M 156.3376937719629 1.5059e-05 deg
tp 2456523.887199455150
(2013-Aug-19.38719946)
7.7978e-05 JED
period 2018.58298265841
5.53
2.6883e-05
7.36e-08
d
yr
n .1783429282287377 2.3752e-09 deg/d
Q 3.918424067936771 3.479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      901  
   data-arc span      9360 days (25.63 yr)  
   first obs. used      1990-04-29  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54497  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:02:28  

Additional Information
 Earth MOID = 1.31814 au 
 Jupiter MOID = 1.40579 au 
 T_jup = 3.083 
[ 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 12.6 mag n/a MPO319173  

7061 Pieri           Discovered 1991 Aug. 15 by E. F. Helin at Palomar.
David C. Pieri (b. 1949), a staff scientist in the Earth and Space Sciences Division at the Jet Propulsion Laboratory since 1979, has research interests in volcanology, fluvial geomorphology, and planetary geology.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000320/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1991 PE1 = 1990 HH3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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