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9515 Dubner (1975 RA2)
Classification: Main-belt Asteroid          SPK-ID: 2009515
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2256560849073115 4.9234e-08  
a 2.423086014972998 1.2042e-08 au
q 1.876301911440532 1.1867e-07 au
i 23.71847834034854 5.728e-06 deg
node 25.36089919572316 1.1161e-05 deg
peri 315.0314782175647 1.6568e-05 deg
M 314.3183982230798 1.674e-05 deg
tp 2459175.319750567222
(2020-Nov-21.81975057)
6.4843e-05 TDB
period 1377.69053089545
3.77
1.027e-05
2.812e-08
d
yr
n .2613068696683374 1.9479e-09 deg/d
Q 2.969870118505463 1.476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1583  
   data-arc span      23799 days (65.16 yr)  
   first obs. used      1955-04-14  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:59:11  

Additional Information
 Earth MOID = .925442 au 
 Jupiter MOID = 2.60723 au 
 T_jup = 3.365 
[ 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 13.1   n/a MPO473896  
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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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