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21205 (1994 PV27)
Classification: Main-belt Asteroid          SPK-ID: 2021205
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1571210734968835 3.8526e-08  
a 2.613256542082745 1.0362e-08 au
q 2.20265886886795 1.0087e-07 au
i 6.665463546516558 3.559e-06 deg
node 131.4739318507928 3.4736e-05 deg
peri 45.98640204613483 3.6245e-05 deg
M 229.6679998750202 1.2077e-05 deg
tp 2459759.124598720107
(2022-Jun-28.62459872)
5.3507e-05 TDB
period 1543.019790583986
4.22
9.1774e-06
2.513e-08
d
yr
n .2333087379674832 1.3876e-09 deg/d
Q 3.02385421529754 1.199e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1537  
   data-arc span      9681 days (26.51 yr)  
   first obs. used      1994-08-12  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:41:28  

Additional Information
 Earth MOID = 1.21303 au 
 Jupiter MOID = 1.95222 au 
 T_jup = 3.381 
[ 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 14.39   n/a E2021B10  
diameter diameter 4.297 km 0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.182   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21205 (1994 PV27)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1994 PV27 = 1999 VS197 = 2000 YO18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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