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52287 (1990 QP4)
Classification: Main-belt Asteroid          SPK-ID: 2052287
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .178024372002604 3.8784e-08  
a 2.376679895627799 9.8198e-09 au
q 1.953572949757445 9.2179e-08 au
i 2.463889795657186 5.2881e-06 deg
node 347.5731365060469 9.7479e-05 deg
peri 330.2066057029245 9.8736e-05 deg
M 113.4677862834306 1.8621e-05 deg
tp 2458778.682545226223
(2019-Oct-22.18254523)
6.7844e-05 TDB
period 1338.303043466836
3.66
8.2942e-06
2.271e-08
d
yr
n .2689973707804102 1.6671e-09 deg/d
Q 2.799786841498152 1.1568e-08 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      11165 days (30.57 yr)  
   first obs. used      1990-08-16  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55913  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:44:04  

Additional Information
 Earth MOID = .938811 au 
 Jupiter MOID = 2.4937 au 
 T_jup = 3.518 
[ 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 15.46   n/a E2021B10  
diameter diameter 4.594 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.037   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52287 (1990 QP4)          Discovered 1990-Aug-23 by Holt, H. E. at Palomar
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QP4 = 1990 QY9 = 2000 GE118 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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