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190021 (2004 PZ55)
Classification: Main-belt Asteroid          SPK-ID: 2190021
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2523913733760025 6.9781e-08  
a 2.68955849519392 1.855e-08 au
q 2.010737132816832 1.9399e-07 au
i 14.69801493940562 8.2278e-06 deg
node 342.5693927240137 1.7358e-05 deg
peri 342.2161430784481 1.9863e-05 deg
M 269.26683784875 1.1596e-05 deg
tp 2459606.553692514854
(2022-Jan-27.05369252)
5.3821e-05 TDB
period 1611.090430879835
4.41
1.6667e-05
4.563e-08
d
yr
n .2234511440822101 2.3117e-09 deg/d
Q 3.368379857571008 2.3231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      579  
   data-arc span      7106 days (19.46 yr)  
   first obs. used      2000-12-07  
   last obs. used      2020-05-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51642  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:05:54  

Additional Information
 Earth MOID = 1.00254 au 
 Jupiter MOID = 2.01973 au 
 T_jup = 3.280 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.41   n/a E2021B55  
diameter diameter 3.763 km 0.764 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.114   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

190021 (2004 PZ55)          Discovered 2004-Aug-08 by LONEOS at Anderson Mesa
Reference: 20080819/Numbers.arcLast Updated: 2008-08-25
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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