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

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2860157489184847 1.4378e-08  
a 2.228500998801459 3.9867e-09 au
q 1.591114616663668 3.2544e-08 au
i 3.229788108592644 5.0997e-07 deg
node 100.6717977534321 1.3194e-05 deg
peri 248.0869997467778 1.4296e-05 deg
M 218.6305636054679 4.3093e-06 deg
tp 2459873.667331002175
(2022-Oct-21.16733100)
1.5291e-05 TDB
period 1215.115823772408
3.33
3.2607e-06
8.927e-09
d
yr
n .2962680535937358 7.9501e-10 deg/d
Q 2.865887380939249 5.1269e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3509  
   data-arc span      33515 days (91.76 yr)  
   first obs. used      1929-09-10  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43377  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:59:39  

Additional Information
 Earth MOID = .587508 au 
 Jupiter MOID = 2.56749 au 
 T_jup = 3.587 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.00   n/a MPCxxxxx  
rotation period rot_per 4.6584 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 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 Bull. 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
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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