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101543 (1998 YK21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2101543
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1454766615590664 6.2975e-08  
a 3.215537611307277 2.459e-08 au
q 2.747751934496679 2.0611e-07 au
i 1.091492482116775 6.029e-06 deg
node 138.6552682683169 0.00032232 deg
peri 252.310538231753 0.00032309 deg
M .08752211394652677 1.9119e-05 deg
tp 2459199.987971522842
(2020-Dec-16.48797152)
0.00011185 TDB
period 2106.099172713372
5.77
2.4159e-05
6.614e-08
d
yr
n .1709321216513264 1.9607e-09 deg/d
Q 3.683323288117875 2.8167e-08 au
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1998-12-14  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59778  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:18  

Additional Information
 Earth MOID = 1.75242 au 
 Jupiter MOID = 1.75573 au 
 T_jup = 3.173 
[ 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 15.65   n/a E2021B55  
diameter diameter 4.585 km 0.450 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101543 (1998 YK21)          Discovered 1998-Dec-26 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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