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175290 (2005 LK21)
Classification: Main-belt Asteroid          SPK-ID: 2175290
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1405789778809882 4.6662e-08  
a 2.431856863466014 1.2221e-08 au
q 2.089988911247096 1.1192e-07 au
i .7635834812572586 5.137e-06 deg
node 206.184717803587 0.00029803 deg
peri .08067394059669168 0.00029869 deg
M 62.51910482885247 1.624e-05 deg
tp 2458959.944278432660
(2020-Apr-20.44427843)
6.3159e-05 TDB
period 1385.17753895089
3.79
1.0442e-05
2.859e-08
d
yr
n .2598944827481522 1.9592e-09 deg/d
Q 2.773724815684932 1.394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      309  
   data-arc span      8505 days (23.29 yr)  
   first obs. used      1997-03-11  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57081  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:04:47  

Additional Information
 Earth MOID = 1.08473 au 
 Jupiter MOID = 2.18569 au 
 T_jup = 3.493 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457445.5 (2016-Feb-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .141139638762085 4.6653e-08  
q 2.088496697544885 1.1213e-07 au
tp 2457574.117450091977
(2016-Jul-04.61745009)
6.7327e-05 TDB
node 206.2325156820255 0.00029835 deg
peri 359.7312821829037 0.000299 deg
i .7628607860948732 5.1371e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      309  
   data-arc span      8505 days (23.29 yr)  
   first obs. used      1997-03-11  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57081  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:04:47  

Additional Information
 Jupiter MOID = 2.18569 au 
 T_jup = 3.493 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.176505398238537E-15 -5.208979156963538E-15 -9.759300693665964E-13 1.525601254974769E-15 -2.781864900711038E-13 -2.527933332469594E-16
q -5.208979156963538E-15 1.257288226525976E-14 2.025001231206712E-12 -3.179724491407913E-15 5.747567940136477E-13 5.946269887015477E-16
tp -9.759300693665964E-13 2.025001231206712E-12 4.532991478264177E-9 -1.220731619753514E-12 1.342155384805428E-9 1.963431396480841E-13
node 1.525601254974769E-15 -3.179724491407913E-15 -1.220731619753514E-12 8.901286242108037E-8 -8.900457571643483E-8 -3.448594084694757E-10
peri -2.781864900711038E-13 5.747567940136477E-13 1.342155384805428E-9 -8.900457571643483E-8 8.940279921507933E-8 3.448896606377547E-10
i -2.527933332469594E-16 5.946269887015477E-16 1.963431396480841E-13 -3.448594084694757E-10 3.448896606377547E-10 2.639030612792563E-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 17.49   n/a E2021B55  

175290 (2005 LK21)          Discovered 2005-Jun-06 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 2005 LK21 = 1999 WP25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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