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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .196283107046028 1.835e-08  
a 2.79040912369061 1.4503e-08 au
q 2.242698950963033 5.3703e-08 au
i 24.70780439993939 3.6054e-07 deg
node 108.7113992281285 1.8773e-06 deg
peri 308.1487237861264 5.5416e-06 deg
M 224.463667029657 9.062e-06 deg
tp 2460037.493288538606
(2023-Apr-02.99328854)
4.5865e-05 TDB
period 1702.551476912031
4.66
1.3273e-05
3.634e-08
d
yr
n .2114473511561265 1.6484e-09 deg/d
Q 3.338119296418187 1.7349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1923  
   data-arc span      9856 days (26.98 yr)  
   first obs. used      1994-08-09  
   last obs. used      2021-08-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4239  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:58:24  

Additional Information
 Earth MOID = 1.32287 au 
 Jupiter MOID = 2.08597 au 
 T_jup = 3.169 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457433.5 (2016-Feb-15.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1964329607718051 1.8405e-08  
q 2.242039145063774 5.3861e-08 au
tp 2456634.667061637804
(2013-Dec-08.16706164)
3.5261e-05 TDB
node 108.7170253382051 1.8771e-06 deg
peri 308.5538632752996 5.5093e-06 deg
i 24.70935000930576 3.6069e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1923  
   data-arc span      9856 days (26.98 yr)  
   first obs. used      1994-08-09  
   last obs. used      2021-08-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4239  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:58:24  

Additional Information
 Jupiter MOID = 2.08597 au 
 T_jup = 3.169 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.387393647971104E-16 -9.67614922300665E-16 4.961680822103922E-13 -7.535332473829172E-16 6.359531009612663E-14 -3.934516479567125E-16
q -9.67614922300665E-16 2.900980113446809E-15 -1.355588052073512E-12 2.31188208753454E-15 -1.619951901389824E-13 1.191421670757393E-15
tp 4.961680822103922E-13 -1.355588052073512E-12 1.243368905551205E-9 1.310986501822546E-12 1.822925038443133E-10 1.472197939506927E-12
node -7.535332473829172E-16 2.31188208753454E-15 1.310986501822546E-12 3.523510102894966E-12 -2.446272458322851E-12 -3.812864631385968E-14
peri 6.359531009612663E-14 -1.619951901389824E-13 1.822925038443133E-10 -2.446272458322851E-12 3.035284238468148E-11 3.365584662713862E-13
i -3.934516479567125E-16 1.191421670757393E-15 1.472197939506927E-12 -3.812864631385968E-14 3.365584662713862E-13 1.300956940020574E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.14   n/a MPO636382  
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

Alternate Designations
 1994 PN1 = 1998 MN28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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