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JPL Small-Body Database Browser
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48221 (2001 KA41)
Classification: Main-belt Asteroid          SPK-ID: 2048221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1310164201480538 2.9914e-08  
a 2.614976213258826 1.0934e-08 au
q 2.272371391025341 7.8305e-08 au
i 13.90532333689777 4.136e-06 deg
node 177.5937672501322 1.7215e-05 deg
peri 130.1921888422519 2.5306e-05 deg
M 124.3303805817346 1.9681e-05 deg
tp 2458467.073234556672
(2018-Dec-14.57323456)
8.3497e-05 TDB
period 1544.543133070806
4.23
9.6869e-06
2.652e-08
d
yr
n .2330786316625945 1.4618e-09 deg/d
Q 2.957581035492312 1.2366e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1270  
   data-arc span      17819 days (48.79 yr)  
   first obs. used      1971-04-16  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:02:30  

Additional Information
 Earth MOID = 1.28489 au 
 Jupiter MOID = 2.4338 au 
 T_jup = 3.354 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457144.5 (2015-May-02.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1324622369192675 2.9841e-08  
q 2.267791726069011 7.8188e-08 au
tp 2456923.796501279954
(2014-Sep-23.29650128)
8.0555e-05 TDB
node 177.6359405167342 1.7194e-05 deg
peri 130.2973898663487 2.5146e-05 deg
i 13.91606709109569 4.1388e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1270  
   data-arc span      17819 days (48.79 yr)  
   first obs. used      1971-04-16  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:02:30  

Additional Information
 Jupiter MOID = 2.4338 au 
 T_jup = 3.354 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.904908867895101E-16 -2.316062159084168E-15 -6.420362717294146E-14 2.181166303055875E-15 -4.366925709159324E-14 2.290814368818921E-16
q -2.316062159084168E-15 6.113319892067901E-15 2.757263620868147E-13 -4.37136909774602E-15 1.404007910773989E-13 3.372467754915802E-17
tp -6.420362717294146E-14 2.757263620868147E-13 6.489103512522471E-9 2.962169122039715E-11 1.497891363422012E-9 1.611169692409404E-12
node 2.181166303055875E-15 -4.37136909774602E-15 2.962169122039715E-11 2.956235639322525E-10 -2.797735438054853E-10 2.604390029041325E-11
peri -4.366925709159324E-14 1.404007910773989E-13 1.497891363422012E-9 -2.797735438054853E-10 6.323435403774638E-10 -2.491979747439728E-11
i 2.290814368818921E-16 3.372467754915802E-17 1.611169692409404E-12 2.604390029041325E-11 -2.491979747439728E-11 1.712960984412866E-11

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 14.6   n/a MPO439421  
diameter diameter 2.941 km 0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.389   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48221 (2001 KA41)          Discovered 2001-May-23 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 KA41 = 2000 CA97 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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