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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08893341303838896 1.0295e-08  
a 2.906404522465611 1.0522e-08 au
q 2.647928048612535 2.9529e-08 au
i 2.972588538556071 2.9098e-07 deg
node 112.5328577599561 9.5808e-06 deg
peri 269.0245954632816 1.6753e-05 deg
M 40.25094512913647 1.16e-05 deg
tp 2458998.148653099786
5.8433e-05 TDB
period 1809.808059173882
n .1989161216158625 1.0802e-09 deg/d
Q 3.164880996318687 1.1458e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3476  
   data-arc span      41762 days (114.34 yr)  
   first obs. used      1906-11-11  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43273  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:38:09  

Additional Information
 Earth MOID = 1.6514 au 
 Jupiter MOID = 2.26894 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 12.17   n/a E2021B10  
diameter diameter 10.994 km 1.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 86.787 h n/a LCDB (Rev. 2020-October); 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.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.226   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2100-Apr-03 08:48 00:02 Ceres 0.0441284022871642 0.0441197054624204 0.0441370999744413 3.90125895705797 3.9012565030904 2488161.866523959 1.87184389345734 528.493017694438 35.3989290836382 35.5566927300903 107964.944247378 T 43 CATAB v2.0f-lin.ifort 2021-Apr-12 13:40:33 2021-Apr-12 13:40

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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