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74553 (1999 KR1)
Classification: Main-belt Asteroid          SPK-ID: 2074553
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07313095762968749 4.5902e-08  
a 3.130346646998237 2.0708e-08 au
q 2.901421398990375 1.4195e-07 au
i 19.18492433348741 4.7574e-06 deg
node 34.97932740112275 1.3668e-05 deg
peri 309.5787585277656 3.3592e-05 deg
M 163.0781008300833 3.1792e-05 deg
tp 2458084.110254779359
(2017-Nov-26.61025478)
0.00017759 TDB
period 2022.958978552032
5.54
2.0073e-05
5.496e-08
d
yr
n .1779571428866423 1.7658e-09 deg/d
Q 3.359271895006099 2.2222e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1525  
   data-arc span      7706 days (21.10 yr)  
   first obs. used      1999-03-25  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4735  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:06:27  

Additional Information
 Earth MOID = 1.9331 au 
 Jupiter MOID = 1.99737 au 
 T_jup = 3.123 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457085.5 (2015-Mar-04.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07110612558625028 4.5755e-08  
q 2.909404294488616 1.4094e-07 au
tp 2458084.161119572511
(2017-Nov-26.66111957)
0.0001829 TDB
node 35.01983941650539 1.3673e-05 deg
peri 309.4141999048674 3.4448e-05 deg
i 19.17637830086129 4.7558e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1525  
   data-arc span      7706 days (21.10 yr)  
   first obs. used      1999-03-25  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4735  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:06:27  

Additional Information
 Jupiter MOID = 1.99737 au 
 T_jup = 3.123 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.093500433018678E-15 -6.390198401018489E-15 1.158740301734446E-12 3.273961783306353E-15 1.220901432841228E-13 1.489936564817345E-15
q -6.390198401018489E-15 1.986489601271423E-14 -3.359114433009091E-12 -8.761284116352154E-15 -3.776919137463398E-13 -3.496748909196482E-15
tp 1.158740301734446E-12 -3.359114433009091E-12 3.345348857729814E-8 2.014262129861831E-11 5.793636003395789E-9 -1.019911737547879E-11
node 3.273961783306353E-15 -8.761284116352154E-15 2.014262129861831E-11 1.86951643281901E-10 -1.727794588357404E-10 -4.768008639590138E-12
peri 1.220901432841228E-13 -3.776919137463398E-13 5.793636003395789E-9 -1.727794588357404E-10 1.186655469079684E-9 2.723952078391374E-12
i 1.489936564817345E-15 -3.496748909196482E-15 -1.019911737547879E-11 -4.768008639590138E-12 2.723952078391374E-12 2.261718550239457E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO502608  
diameter diameter 10.090 km 0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.084   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74553 (1999 KR1)          Discovered 1999-May-16 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 KR1 = 2001 SJ54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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