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180176 (2003 HP54)
Classification: Main-belt Asteroid          SPK-ID: 2180176
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1794047207290138 4.9575e-08  
a 3.195331480270452 3.0554e-08 au
q 2.622073928415905 1.7145e-07 au
i 1.422872320946423 6.1969e-06 deg
node 148.9702364115217 0.00024452 deg
peri 126.8791907088403 0.00024544 deg
M 349.7488203238876 2.2188e-05 deg
tp 2459259.907824490144
(2021-Feb-14.40782449)
0.00012878 TDB
period 2086.278603260441
5.71
2.9924e-05
8.193e-08
d
yr
n .1725560524070904 2.475e-09 deg/d
Q 3.768589032125 3.6036e-08 au
  Orbit Determination Parameters
   # obs. used (total)      384  
   data-arc span      7934 days (21.72 yr)  
   first obs. used      1998-08-30  
   last obs. used      2020-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59556  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:25:27  

Additional Information
 Earth MOID = 1.60415 au 
 Jupiter MOID = 1.36143 au 
 T_jup = 3.170 
[ 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 15.43   n/a E2021B55  
diameter diameter 4.500 km 0.609 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

180176 (2003 HP54)          Discovered 2003-Apr-24 by LONEOS at Anderson Mesa
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2003 HP54 = 2004 RU27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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