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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2868229791577185 3.6972e-08  
a 2.22779654688984 6.124e-09 AU
q 1.588813304353618 8.2327e-08 AU
i 3.229412457527068 4.9424e-06 deg
node 100.7176461602712 6.9186e-05 deg
peri 248.0667986769543 6.9845e-05 deg
M 228.7637832188501 9.5776e-06 deg
tp 2457443.254432840544
(2016-Feb-24.75443284)
3.3239e-05 JED
period 1214.539703536242
3.33
5.008e-06
1.371e-08
d
yr
n .2964085891567214 1.2222e-09 deg/d
Q 2.866779789426061 7.8805e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1652  
   data-arc span      30959 days (84.76 yr)  
   first obs. used      1929-09-10  
   last obs. used      2014-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4874  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:49:24  

Additional Information
 Earth MOID = .586365 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. 2014-Mar-01) 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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