Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1451409646490382 3.6279e-08  
a 3.185227231923183 1.7143e-08 au
q 2.722920278855467 1.2027e-07 au
i 9.548293851922899 4.5302e-06 deg
node 336.0852793588462 2.3469e-05 deg
peri 312.7659412161971 2.818e-05 deg
M 10.21431698577971 1.6858e-05 deg
tp 2458941.586355799231
(2020-Apr-02.08635580)
9.7085e-05 TDB
period 2076.390613469659
5.68
1.6762e-05
4.589e-08
d
yr
n .1733777824194833 1.3996e-09 deg/d
Q 3.6475341849909 1.9631e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2600  
   data-arc span      33113 days (90.66 yr)  
   first obs. used      1929-08-31  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46997  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:20:01  

Additional Information
 Earth MOID = 1.71808 au 
 Jupiter MOID = 1.65529 au 
 T_jup = 3.160 
[ 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-August); 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

[ show close-approach data ]
Alternate Designations
 1929 QC = 1955 EC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-25 16:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin