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181677 (2617 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2181677
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .199352241508162 5.5002e-08  
a 2.32894837768236 9.3986e-09 au
q 1.864667298234584 1.2585e-07 au
i 2.091401145047672 5.9483e-06 deg
node 155.1673360138382 0.00013614 deg
peri 240.3275172481269 0.00013679 deg
M 322.27134550816 1.3447e-05 deg
tp 2459336.552659894871
(2021-May-02.05265989)
4.8762e-05 TDB
period 1298.189883043585
3.55
7.8583e-06
2.151e-08
d
yr
n .2773092016061517 1.6786e-09 deg/d
Q 2.793229457130136 1.1272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      342  
   data-arc span      21960 days (60.12 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-11-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62233  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:35  

Additional Information
 Earth MOID = .871372 au 
 Jupiter MOID = 2.63491 au 
 T_jup = 3.545 
[ 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 17.13   n/a MPCxxxxx  

181677 (2617 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2617 P-L = 1999 RW79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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