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JPL Small-Body Database Browser
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1157 Arabia (1929 QC)
Classification: Main-belt Asteroid          SPK-ID: 2001157
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1448404480251987 3.6514e-08  
a 3.182712635614255 1.6367e-08 au
q 2.721727111536425 1.206e-07 au
i 9.543639622815185 4.5663e-06 deg
node 336.1775580774495 2.358e-05 deg
peri 313.1888671324262 2.8373e-05 deg
M 300.4111338904823 1.699e-05 deg
tp 2458943.786867775902
(2020-Apr-04.28686778)
9.8582e-05 TDB
period 2073.93227070628
5.68
1.5997e-05
4.38e-08
d
yr
n .1735832963712945 1.3389e-09 deg/d
Q 3.643698159692085 1.8737e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2558  
   data-arc span      32885 days (90.03 yr)  
   first obs. used      1929-08-31  
   last obs. used      2019-09-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4654  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:01:48  

Additional Information
 Earth MOID = 1.71607 au 
 Jupiter MOID = 1.65743 au 
 T_jup = 3.161 
[ 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 10.0   n/a MPO448923  
diameter diameter 29.113 km 4.433 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.225 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Caspari, P.V. (2008) Minor Planet Bull. 35, 185-186.]
geometric albedo albedo 0.247   0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1157 Arabia (1929 QC)          Discovered 1929-Aug-31 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1929 QC = 1955 EC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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