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5438 Lorre (1990 QJ)
Classification: Main-belt Asteroid          SPK-ID: 2005438
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .276182406626932 5.0191e-08  
a 2.745569251877249 1.165e-08 au
q 1.987291328332885 1.3945e-07 au
i 26.56956474205939 4.8002e-06 deg
node 298.4820346023078 1.0083e-05 deg
peri 238.4503689617005 1.2635e-05 deg
M 343.9019901990739 1.0601e-05 deg
tp 2459074.804773940180
(2020-Aug-13.30477394)
4.9169e-05 TDB
period 1661.678614267333
4.55
1.0577e-05
2.896e-08
d
yr
n .2166483921192734 1.379e-09 deg/d
Q 3.503847175421612 1.4868e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2084  
   data-arc span      24399 days (66.80 yr)  
   first obs. used      1953-08-15  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37313  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:20:17  

Additional Information
 Earth MOID = 1.09748 au 
 Jupiter MOID = 1.93563 au 
 T_jup = 3.144 
[ 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 11.7   n/a MPO502205  
diameter diameter 28.072 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 26. h n/a LCDB (Rev. 2019-August); 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:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.056   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

5438 Lorre (1990 QJ)          Discovered 1990-Aug-18 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1990 QJ = 1952 CD = 1970 AV = 1985 OT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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