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11507 Danpascu (1990 OF)
Classification: Main-belt Asteroid          SPK-ID: 2011507
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2963178898494613 4.1993e-08  
a 2.661879623642703 1.2974e-08 au
q 1.873117070531618 1.1714e-07 au
i 12.1286101512045 5.2241e-06 deg
node 250.7788181564978 1.93e-05 deg
peri 85.0558714101991 2.1471e-05 deg
M 344.5005507096682 1.0176e-05 deg
tp 2459268.795928121363
(2021-Feb-23.29592812)
4.5148e-05 TDB
period 1586.284368117982
4.34
1.1597e-05
3.175e-08
d
yr
n .2269454375492052 1.6592e-09 deg/d
Q 3.450642176753787 1.6819e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1039  
   data-arc span      11039 days (30.22 yr)  
   first obs. used      1990-07-20  
   last obs. used      2020-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47457  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:59:07  

Additional Information
 Earth MOID = .908578 au 
 Jupiter MOID = 2.14956 au 
 T_jup = 3.291 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.44   n/a E2021B10  
rotation period rot_per 2.685 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

11507 Danpascu           Discovered 1990 July 20 by E. F. Helin at Palomar.
Dan Pascu (b. 1938), at the U.S. Naval Observatory since 1963, developed techniques for astrometric observations of the planetary satellites and produced the largest astrometric archive and observational database for these objects. In 1980 he rediscovered Saturn X (Janus) and codiscovered Saturn XIV (Calypso).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091004/MPCPages.arcLast Updated: 2009-10-06

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Alternate Designations
 1990 OF = 1994 LP3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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