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2239 Paracelsus (1978 RC)
Classification: Main-belt Asteroid          SPK-ID: 2002239
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 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1056197761601799 1.8708e-08  
a 3.195753586763901 1.2986e-08 au
q 2.858218808266806 6.2171e-08 au
i 10.93609093307311 6.9039e-07 deg
node 20.06881117200539 3.7493e-06 deg
peri 2.964813902580507 1.1892e-05 deg
M 118.131174514643 1.3677e-05 deg
tp 2458515.768392447419
(2019-Feb-01.26839245)
7.7354e-05 TDB
period 2086.692016156785
5.71
1.2719e-05
3.482e-08
d
yr
n .172521865810863 1.0516e-09 deg/d
Q 3.533288365260997 1.4358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3092  
   data-arc span      30126 days (82.48 yr)  
   first obs. used      1938-09-21  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40877  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:31:15  

Additional Information
 Earth MOID = 1.86016 au 
 Jupiter MOID = 1.93141 au 
 T_jup = 3.159 
[ show covariance matrix ]

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 11.01   n/a E2021B10  
diameter diameter 33.978 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.101 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Simpson, G.; Chong, E.; Gerhardt, M.; Gorsky, S.; et al. (2013) Minor Planet Bull. 146-151.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.062   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2239 Paracelsus (1978 RC)          Discovered 1978-Sep-13 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1978 RC = 1938 UT1 = 1961 UO = 1976 JX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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