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175647 (4091 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2175647
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2559859780912156 4.4712e-08  
a 2.614250103348993 9.062e-09 au
q 1.945038733668139 1.1732e-07 au
i 2.827681363495115 4.5921e-06 deg
node 224.1939477203155 0.00010021 deg
peri 142.4488762685085 0.00010072 deg
M 137.2911007023249 8.3427e-06 deg
tp 2458807.711913688147
(2019-Nov-20.21191369)
3.5384e-05 TDB
period 1543.89985940784
4.23
8.0277e-06
2.198e-08
d
yr
n .2331757450499914 1.2124e-09 deg/d
Q 3.283461473029847 1.1382e-08 au
  Orbit Determination Parameters
   # obs. used (total)      476  
   data-arc span      22078 days (60.45 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56396  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:06:15  

Additional Information
 Earth MOID = .943935 au 
 Jupiter MOID = 2.19097 au 
 T_jup = 3.359 
[ 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 16.61   n/a MPCxxxxx  

175647 (4091 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 4091 P-L = 1998 RK56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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