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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2542211081208192 9.3652e-08  
a 3.125164695243153 2.9268e-08 AU
q 2.330681863358377 2.9466e-07 AU
i 18.96824364228281 9.9964e-06 deg
node 137.5341361829423 2.2745e-05 deg
peri 173.7005469566942 2.7165e-05 deg
M 49.24332603757713 1.5355e-05 deg
tp 2456524.472298477771
(2013-Aug-19.97229848)
8.4176e-05 JED
period 2017.937871868653
5.52
2.8348e-05
7.761e-08
d
yr
n .1783999423464075 2.5062e-09 deg/d
Q 3.91964752712793 3.6709e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      786  
   data-arc span      8620 days (23.60 yr)  
   first obs. used      1990-04-29  
   last obs. used      2013-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58263  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Dec-19 23:00:58  

Additional Information
 Earth MOID = 1.31654 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 12.5 mag n/a MPO265995  

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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