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JPL Small-Body Database Browser
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5278 Polly (1988 EJ1)
Classification: Main-belt Asteroid          SPK-ID: 2005278
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08572147388346057 4.2176e-08  
a 2.218585427976903 6.3466e-09 au
q 2.028405015154354 9.1895e-08 au
i 4.101859692616672 4.4937e-06 deg
node 225.3048228267308 4.6943e-05 deg
peri 305.5554100562319 5.2356e-05 deg
M 270.0462802513632 2.4792e-05 deg
tp 2459302.098576387845
(2021-Mar-28.59857639)
8.3726e-05 TDB
period 1207.014982849216
3.30
5.1793e-06
1.418e-08
d
yr
n .2982564467842834 1.2798e-09 deg/d
Q 2.408765840799451 6.8907e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2195  
   data-arc span      15310 days (41.92 yr)  
   first obs. used      1978-03-05  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47335  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:33:54  

Additional Information
 Earth MOID = 1.0366 au 
 Jupiter MOID = 2.56574 au 
 T_jup = 3.643 
[ 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 13.6   n/a MPO395048  
diameter diameter 4.443 km 0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.356   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

5278 Polly (1988 EJ1)          Discovered 1988-Mar-12 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1988 EJ1 = 1978 EF7 = 1985 JJ1 = 1986 TQ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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