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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2761824070919297 5.0232e-08  
a 2.745569251952996 1.1968e-08 au
q 1.987291327111028 1.396e-07 au
i 26.56956480494747 4.8064e-06 deg
node 298.4820341391292 1.0217e-05 deg
peri 238.450369410028 1.2807e-05 deg
M 343.9019901328791 1.1036e-05 deg
tp 2459074.804774248796
(2020-Aug-13.30477425)
5.1199e-05 TDB
period 1661.678614336099
4.55
1.0865e-05
2.975e-08
d
yr
n .2166483921103077 1.4166e-09 deg/d
Q 3.503847176794963 1.5273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2023  
   data-arc span      24357 days (66.69 yr)  
   first obs. used      1953-08-15  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37552  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:21:11  

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

[ 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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