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JPL Small-Body Database Browser
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2319 Aristides (7631 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2002319
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08877166837133996 2.8915e-08  
a 2.906850460129867 1.3069e-08 au
q 2.648804495078141 8.7264e-08 au
i 2.972328870015613 3.6181e-06 deg
node 112.5317189838641 6.2645e-05 deg
peri 268.6278619768627 6.6162e-05 deg
M 281.2481149686064 2.0793e-05 deg
tp 2458996.496110145369
(2020-May-26.99611015)
0.00010445 TDB
period 1810.224600915946
4.96
1.2208e-05
3.342e-08
d
yr
n .1988703500205695 1.3412e-09 deg/d
Q 3.164896425181592 1.4229e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2836  
   data-arc span      41290 days (113.05 yr)  
   first obs. used      1906-11-11  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4624  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:34:00  

Additional Information
 Earth MOID = 1.65274 au 
 Jupiter MOID = 2.27006 au 
 T_jup = 3.277 
[ 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 12.1   n/a MPO452194  
diameter diameter 10.994 km 1.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 86.787 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.226   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2319 Aristides (7631 P-L)          Discovered 1960-Oct-17 by PLS at Palomar
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 7631 P-L = 1935 QU = 1975 UC = 1975 VJ9 = 1980 VY = A906 VE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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