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21194 (1994 PN1)
Classification: Main-belt Asteroid          SPK-ID: 2021194
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1964303630730856 1.8424e-08  
a 2.78987419714795 1.4783e-08 au
q 2.241858195673945 5.3748e-08 au
i 24.70916919404073 3.6064e-07 deg
node 108.7093962746619 1.8799e-06 deg
peri 308.2147610989419 5.5559e-06 deg
M 182.9287213234048 8.962e-06 deg
tp 2460037.684116122002
(2023-Apr-03.18411612)
4.6382e-05 TDB
period 1702.061927018529
4.66
1.3528e-05
3.704e-08
d
yr
n .2115081679963345 1.6811e-09 deg/d
Q 3.337890198621956 1.7687e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1779  
   data-arc span      9677 days (26.49 yr)  
   first obs. used      1994-08-09  
   last obs. used      2021-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 02:55:12  

Additional Information
 Earth MOID = 1.32162 au 
 Jupiter MOID = 2.08523 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 13.13   n/a E2021B10  
diameter diameter 13.905 km 0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21194 (1994 PN1)          Discovered 1994-Aug-11 by McNaught, R. H. at Siding Spring
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 PN1 = 1998 MN28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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