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1131 Porzia (1929 RO)
Classification: Mars-crossing Asteroid          SPK-ID: 2001131
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2865985789285071 3.9308e-08  
a 2.228141961179125 5.644e-09 AU
q 1.589559641454211 8.7892e-08 AU
i 3.229456241898328 5.1071e-06 deg
node 100.7206916349264 7.5815e-05 deg
peri 248.0728287053497 7.6491e-05 deg
M 169.4662879866731 9.828e-06 deg
tp 2456228.634984267820
(2012-Oct-28.13498427)
3.247e-05 JED
period 1214.822181505356
3.33
4.6158e-06
1.264e-08
d
yr
n .2963396663978455 1.126e-09 deg/d
Q 2.866724280904039 7.2616e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1639  
   data-arc span      30884 days (84.56 yr)  
   first obs. used      1929-09-10  
   last obs. used      2014-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50556  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:37:36  

Additional Information
 Earth MOID = .585468 AU 
 T_jup = 3.587 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9 mag n/a MPO256870  
rotation period rot_per 4.6584 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Benishek, V.; Protitch-Benishek, V. (2010) Minor Planet Bul. 37, 64-65.]
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)

1131 Porzia (1929 RO)          Discovered 1929-Sep-10 by Reinmuth, K. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1929 RO = 1939 TJ = 1962 MB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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