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JPL Small-Body Database Browser
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3861 Lorenz (A910 FA)
Classification: Main-belt Asteroid          SPK-ID: 2003861
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1904494390625822 4.4803e-08  
a 2.553086868039343 8.043e-09 au
q 2.066852906143206 1.1774e-07 au
i 5.671927626779884 3.8325e-06 deg
node 198.093742658554 3.3174e-05 deg
peri 342.9886492901612 3.4186e-05 deg
M 346.3822499036628 1.0625e-05 deg
tp 2459056.863723252903
(2020-Jul-26.36372325)
4.4146e-05 TDB
period 1490.03618273939
4.08
7.0411e-06
1.928e-08
d
yr
n .2416048711905439 1.1417e-09 deg/d
Q 3.039320829935481 9.5748e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2864  
   data-arc span      40095 days (109.77 yr)  
   first obs. used      1910-03-30  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46082  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:16:30  

Additional Information
 Earth MOID = 1.07037 au 
 Jupiter MOID = 1.92694 au 
 T_jup = 3.407 
[ 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 12.3   n/a MPO267723  
diameter diameter 8.175 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.91 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ferrero, A. (2016) Minor Planet Bull. 43, 320-321.]
geometric albedo albedo 0.290   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B S   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)

3861 Lorenz (A910 FA)          Discovered 1910-Mar-30 by Helffrich, J. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A910 FA = 1951 GM = 1963 DK = 1971 CD = 1981 SP4 = 1986 WL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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