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181049 (2005 PH4)
Classification: Main-belt Asteroid          SPK-ID: 2181049
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1857110669877616 4.6292e-08  
a 2.404189738772148 1.2146e-08 au
q 1.957705097143745 1.0777e-07 au
i 13.88065970939225 7.4302e-06 deg
node 359.0108093736944 1.662e-05 deg
peri 265.5224358361161 2.8308e-05 deg
M 83.34691411705661 2.3583e-05 deg
tp 2458885.262002656510
(2020-Feb-05.76200266)
8.8973e-05 TDB
period 1361.606248364174
3.73
1.0319e-05
2.825e-08
d
yr
n .2643936163134548 2.0036e-09 deg/d
Q 2.850674380400552 1.4402e-08 au
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      9572 days (26.21 yr)  
   first obs. used      1994-10-12  
   last obs. used      2020-12-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48545  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:00  

Additional Information
 Earth MOID = .999827 au 
 Jupiter MOID = 2.38098 au 
 T_jup = 3.461 
[ 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 15.83   n/a E2021B55  

181049 (2005 PH4)          Discovered 2005-Aug-04 by NEAT at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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