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2125 Karl-Ontjes (2005 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2002125
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1088004975534955 3.3998e-08  
a 2.787790715151099 1.0304e-08 au
q 2.484477698267644 9.4957e-08 au
i 1.690441398016358 3.5014e-06 deg
node 315.5181320039891 0.00013018 deg
peri 16.06555491238501 0.00013123 deg
M 327.612783746662 1.76e-05 deg
tp 2459153.453633449779
8.3405e-05 TDB
period 1700.155629653581
n .2117453212641202 1.174e-09 deg/d
Q 3.091103732034553 1.1425e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2799  
   data-arc span      25038 days (68.55 yr)  
   first obs. used      1951-11-29  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43152  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:41:07  

Additional Information
 Earth MOID = 1.47382 au 
 Jupiter MOID = 2.22485 au 
 T_jup = 3.321 
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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 11.9   n/a MPO435717  
diameter diameter 11.019 km 0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.253   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

2125 Karl-Ontjes (2005 P-L)          Discovered 1960-Sep-24 by PLS at Palomar
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2106-Oct-01 21:54 < 00:01 Psych 0.036789753898816 0.0367838809255256 0.0367956270883191 2.27785067319524 2.27785052881723 2490534.412363589 0.895537999884612 324.663477920522 35.0929095204036 -26.0048465381871 70233.1400566799 T 32 CATAB v2.0f-lin.ifort 2020-Jun-23 15:41:20 2020-Jun-23 15:41

Alternate Designations
 2005 P-L = 1951 WD = 1969 PW = 1969 RJ2 = 1977 ES1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Jul-16 18:27 UT
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