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JPL Small-Body Database Browser
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1287 Lorcia (1933 QL)
Classification: Main-belt Asteroid          SPK-ID: 2001287
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06251207145323172 2.9517e-08  
a 3.010058135582625 1.2468e-08 au
q 2.821893166332703 8.7901e-08 au
i 9.821099063534199 4.2581e-06 deg
node 202.513840471135 1.9348e-05 deg
peri 267.5721968068397 4.0004e-05 deg
M 103.1738574348037 3.4329e-05 deg
tp 2458453.826628945547
(2018-Dec-01.32662895)
0.00018201 TDB
period 1907.483334176626
5.22
1.1852e-05
3.245e-08
d
yr
n .1887303514268426 1.1726e-09 deg/d
Q 3.198223104832548 1.3248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3093  
   data-arc span      31657 days (86.67 yr)  
   first obs. used      1933-08-25  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:22:03  

Additional Information
 Earth MOID = 1.86053 au 
 Jupiter MOID = 1.92581 au 
 T_jup = 3.225 
[ 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 11.1   n/a MPO473781  
diameter diameter 21.678 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.8776 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:
[Stone, G. (2017) Posting on CALL web site: http://www.minorplanet.info/call.html]
geometric albedo albedo 0.140   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.850   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.32 deg.
U-B UB 0.360   0.060 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.32 deg.

1287 Lorcia (1933 QL)          Discovered 1933-Aug-25 by Arend, S. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1933 QL = 1954 TG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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