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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2530602707963171 6.8528e-08  
a 3.127060728237451 2.6925e-08 au
q 2.335725893553153 2.101e-07 au
i 18.96250001106763 7.6139e-06 deg
node 137.538037363257 1.876e-05 deg
peri 173.674296466817 2.2101e-05 deg
M 192.0397014645413 1.4731e-05 deg
tp 2458542.838721742911
(2019-Feb-28.33872174)
9.113e-05 JED
period 2019.774570452014
5.53
2.6086e-05
7.142e-08
d
yr
n .1782377128945802 2.302e-09 deg/d
Q 3.918395562921748 3.3739e-08 au
  Orbit Determination Parameters
   # obs. used (total)      992  
   data-arc span      9440 days (25.85 yr)  
   first obs. used      1990-04-29  
   last obs. used      2016-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54696  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 15:55:04  

Additional Information
 Earth MOID = 1.32208 au 
 Jupiter MOID = 1.40675 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 12.7 mag n/a MPO365334  

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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