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JPL Small-Body Database Browser
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7687 Matthias (2099 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2007687
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1152126972684879 3.474e-08  
a 2.270334351110285 6.453e-09 au
q 2.008763006817567 8.002e-08 au
i 5.776800182443166 3.6607e-06 deg
node 199.1209639075285 3.2205e-05 deg
peri 333.0741097958112 3.5629e-05 deg
M 2.290643627068913 1.4249e-05 deg
tp 2458992.549614553323
(2020-May-23.04961455)
4.9461e-05 TDB
period 1249.491071846063
3.42
5.3271e-06
1.458e-08
d
yr
n .288117304806442 1.2284e-09 deg/d
Q 2.531905695403003 7.1964e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1937  
   data-arc span      24232 days (66.34 yr)  
   first obs. used      1953-10-01  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48276  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:35:52  

Additional Information
 Earth MOID = 1.01537 au 
 Jupiter MOID = 2.43838 au 
 T_jup = 3.598 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO502226  
diameter diameter 3.488 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.333   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7687 Matthias           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named in honor of Matthias Busch (b. 1968), amateur astronomer at the Starkenburg Observatory in Heppenheim who has made a substantial contribution to the astrometry of minor planets. He is an ardent follow-up observer of near-earth objects and a keen developer of astronomical software. Name proposed by L. D. Schmadel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19981208/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 2099 P-L = 1986 EH2 = 1993 GK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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