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1923 Osiris (4011 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2001923
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06250059466085629 3.2694e-08  
a 2.436522285469296 7.2522e-09 au
q 2.284238193723036 7.9518e-08 au
i 4.957074344382528 4.4774e-06 deg
node 353.031056660109 3.9335e-05 deg
peri 106.3416336180984 5.7641e-05 deg
M 168.4294173949075 4.0385e-05 deg
tp 2458350.565704188318
(2018-Aug-20.06570419)
0.00015558 TDB
period 1389.165563303076
3.80
6.2022e-06
1.698e-08
d
yr
n .259148376197876 1.157e-09 deg/d
Q 2.588806377215556 7.7055e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2240  
   data-arc span      24303 days (66.54 yr)  
   first obs. used      1953-12-07  
   last obs. used      2020-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4615  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:14:12  

Additional Information
 Earth MOID = 1.30701 au 
 Jupiter MOID = 2.48571 au 
 T_jup = 3.496 
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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 13.6   n/a MPO439082  
diameter diameter 13.461 km 0.206 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.031   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B C   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)

1923 Osiris           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld at Leiden, on Palomar Schmidt plates taken by T. Gehrels.
Named for the Egyptian god of vegetation, of the waxing and waning moon and of the annual flooding of the Nile.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5013Last Updated: 2006-03-21

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Alternate Designations
 4011 P-L = 1964 TO2 = 1966 FR = 1974 KN = 1974 KP = 1974 LE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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