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32816 (1991 PP1)
Classification: Main-belt Asteroid          SPK-ID: 2032816
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2181088451349673 4.215e-08  
a 2.777136117420287 1.1609e-08 au
q 2.171418166067141 1.1597e-07 au
i .8645268953018834 4.226e-06 deg
node 321.502356553851 0.00026454 deg
peri 342.4569738606227 0.00026471 deg
M 90.00799413669482 9.2173e-06 deg
tp 2458577.857896287286
(2019-Apr-04.35789629)
4.2568e-05 TDB
period 1690.418265576561
4.63
1.0599e-05
2.902e-08
d
yr
n .2129650438184379 1.3354e-09 deg/d
Q 3.382854068773433 1.4141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      15468 days (42.35 yr)  
   first obs. used      1977-07-20  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54767  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 02:28:39  

Additional Information
 Earth MOID = 1.15622 au 
 Jupiter MOID = 1.86941 au 
 T_jup = 3.299 
[ 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 15.3   n/a MPO493081  
diameter diameter 4.004 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.084   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

32816 (1991 PP1)          Discovered 1991-Aug-02 by Elst, E. W. at La Silla
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PP1 = 1996 TX65 = 2000 MA1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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