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9515 Dubner (1975 RA2)
Classification: Main-belt Asteroid          SPK-ID: 2009515
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 .2244367326950912 7.6414e-08  
a 2.424239457916924 1.4333e-08 AU
q 1.880151074711531 1.8398e-07 AU
i 23.70246934625794 1.0765e-05 deg
node 25.42281687121386 1.4633e-05 deg
peri 315.0792650313417 2.3048e-05 deg
M 151.4598244409289 1.8935e-05 deg
tp 2456420.461729746264
(2013-May-07.96172975)
7.1006e-05 JED
period 1378.674365047774
3.77
1.2227e-05
3.348e-08
d
yr
n .2611203987879511 2.3158e-09 deg/d
Q 2.968327841122318 1.755e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      791  
   data-arc span      21737 days (59.51 yr)  
   first obs. used      1955-04-14  
   last obs. used      2014-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50555  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:09:52  

Additional Information
 Earth MOID = .929124 AU 
 T_jup = 3.364 
[ 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 MPO267745  
diameter diameter 11.74 km 1.5 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
geometric albedo albedo 0.0738   0.023 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

9515 Dubner           Discovered 1975 Sept. 5 by M. R. Cesco at the Félix Aguilar Observatory, El Leoncito.
Gloria Dubner (b. 1950) has conducted most of her professional work at the Argentinian Institute of Radioastronomy and at the Argentinian Institute of Astronomy and Physics. Her main field of research is supernova remnants, an area to which she has contributed over 120 refereed papers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080618/MPCPages.arcLast Updated: 2008-06-20

Alternate Designations
 1975 RA2 = 1993 HT6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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