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19456 Pimdouglas (1998 HU5)
Classification: Main-belt Asteroid          SPK-ID: 2019456
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1933623970088141 4.1567e-08  
a 2.215002727634605 7.4387e-09 au
q 1.786704490838116 9.1575e-08 au
i 6.210408213810561 3.8686e-06 deg
node 65.34109109570154 4.0752e-05 deg
peri 300.3882843216526 4.1917e-05 deg
M 166.2847042059562 1.2958e-05 deg
tp 2458644.327352661316
(2019-Jun-09.82735266)
4.1757e-05 TDB
period 1204.092426889342
3.30
6.0656e-06
1.661e-08
d
yr
n .2989803705767219 1.5061e-09 deg/d
Q 2.643300964431093 8.8771e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1401  
   data-arc span      11444 days (31.33 yr)  
   first obs. used      1989-11-22  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50784  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:53:58  

Additional Information
 Earth MOID = .793837 au 
 Jupiter MOID = 2.83105 au 
 T_jup = 3.622 
[ 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 14.78   n/a E2021B10  
diameter diameter 2.584 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.382   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19456 Pimdouglas           Discovered 1998 Apr. 21 by ODAS at Caussols.
Pim (1995-2001), son of Nigel and Jantina Douglas, enjoyed a brief life and brought joy to his family. This minor planet was discovered on his third birthday. He is immortalized as a celestial commemoration of the many children, and their families, living with cerebral palsy. The name was suggested by A. W. Harris (DLR).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1998 HU5 = 1999 SD11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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