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JPL Small-Body Database Browser
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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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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2764059800377344 5.7599e-08  
a 2.745714795187105 1.5472e-08 au
q 1.986782806319306 1.5638e-07 au
i 26.56737213083778 5.163e-06 deg
node 298.4859470158118 1.2583e-05 deg
peri 238.4615594072577 1.4781e-05 deg
M 257.2574545087197 1.29e-05 deg
tp 2459074.774072409768
(2020-Aug-13.27407241)
6.2296e-05 TDB
period 1661.810745014168
4.55
1.4046e-05
3.846e-08
d
yr
n .2166311663828668 1.831e-09 deg/d
Q 3.504646784054904 1.9748e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1649  
   data-arc span      24139 days (66.09 yr)  
   first obs. used      1953-08-15  
   last obs. used      2019-09-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40477  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:50:23  

Additional Information
 Earth MOID = 1.09742 au 
 Jupiter MOID = 1.9366 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 11.6   n/a MPO384803  
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-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:
[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

[ show close-approach data ]
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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