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21316 (1996 XY17)
Classification: Main-belt Asteroid          SPK-ID: 2021316
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1004207744233205 3.6684e-08  
a 2.213818228788048 5.7696e-09 au
q 1.991504887820689 8.1262e-08 au
i 5.71621575919224 3.9884e-06 deg
node 252.0016744646265 3.6676e-05 deg
peri 164.6925068380499 4.0856e-05 deg
M 170.5010363634167 1.7542e-05 deg
tp 2458826.682362276887
(2019-Dec-09.18236228)
5.8396e-05 TDB
period 1203.126702075197
3.29
4.7034e-06
1.288e-08
d
yr
n .2992203559101955 1.1697e-09 deg/d
Q 2.436131569755408 6.349e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1565  
   data-arc span      8984 days (24.60 yr)  
   first obs. used      1996-11-02  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50802  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:32:32  

Additional Information
 Earth MOID = 1.00383 au 
 Jupiter MOID = 2.83551 au 
 T_jup = 3.642 
[ 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 15.02   n/a MPO636384  
diameter diameter 2.094 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.367   0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21316 (1996 XY17)          Discovered 1996-Dec-07 by Spacewatch at Kitt Peak
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 XY17 = 1999 RQ106 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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