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56234 (1999 JL42)
Classification: Main-belt Asteroid          SPK-ID: 2056234
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01389472481234329 3.3617e-08  
a 2.833206964222124 1.4268e-08 au
q 2.793840333117843 9.388e-08 au
i 3.11101792703014 3.6265e-06 deg
node 68.67719928983804 6.8478e-05 deg
peri 228.8863009033696 0.00015454 deg
M 82.44458969558107 0.00013803 deg
tp 2458601.589435483831
(2019-Apr-28.08943548)
0.00066833 TDB
period 1741.870555194454
4.77
1.3158e-05
3.602e-08
d
yr
n .2066743702202437 1.5612e-09 deg/d
Q 2.872573595326405 1.4466e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1358  
   data-arc span      7841 days (21.47 yr)  
   first obs. used      1999-05-08  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51695  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:00:15  

Additional Information
 Earth MOID = 1.77892 au 
 Jupiter MOID = 2.12962 au 
 T_jup = 3.310 
[ 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 14.4   n/a MPO436176  
diameter diameter 3.547 km 0.937 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.293   0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56234 (1999 JL42)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
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
2174-Jan-27 08:16 00:02 Inter 0.0412517184906971 0.0412216376295976 0.0412818028734842 6.51258584826302 6.51258579377221 2515123.844276596 1.50596298508358 1615.52522796531 32.1546835081936 -21.8423451464688 71464.8366852468 T 25 CATAB v2.0f-lin.ifort 2020-Nov-12 23:00:19 2020-Nov-12 23:00
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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