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46820 (1998 MK28)
Classification: Main-belt Asteroid          SPK-ID: 2046820
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1751711377223819 3.029e-08  
a 2.393476446507592 8.3529e-09 au
q 1.974208454261134 7.5825e-08 au
i 1.70900503244941 3.495e-06 deg
node 260.672698905968 0.00012417 deg
peri 51.54371645885902 0.00012477 deg
M 56.88994511411161 1.1739e-05 deg
tp 2459182.765230094724
(2020-Nov-29.26523009)
4.3948e-05 TDB
period 1352.51522938828
3.70
7.0801e-06
1.938e-08
d
yr
n .2661707551809395 1.3934e-09 deg/d
Q 2.812744438754051 9.8161e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1078  
   data-arc span      8893 days (24.35 yr)  
   first obs. used      1997-03-11  
   last obs. used      2021-07-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:53:42  

Additional Information
 Earth MOID = .959956 au 
 Jupiter MOID = 2.4517 au 
 T_jup = 3.509 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457299.5 (2015-Oct-04.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1745146980114351 3.0286e-08  
q 1.977366268372369 7.5753e-08 au
tp 2457829.913205472019
(2017-Mar-17.41320547)
4.3971e-05 TDB
node 260.8002182369569 0.00012418 deg
peri 51.4099873320685 0.00012478 deg
i 1.708494800525451 3.4932e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1078  
   data-arc span      8893 days (24.35 yr)  
   first obs. used      1997-03-11  
   last obs. used      2021-07-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:53:42  

Additional Information
 Jupiter MOID = 2.4517 au 
 T_jup = 3.509 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.172276634194274E-16 -2.286593498439549E-15 2.07141629471434E-13 5.033341524877198E-15 8.577378275941939E-14 -3.718904420949606E-16
q -2.286593498439549E-15 5.738527270634539E-15 -5.057977262901464E-13 -1.227292147267042E-14 -2.16060330637486E-13 9.106290761250651E-16
tp 2.07141629471434E-13 -5.057977262901464E-13 1.933492296351638E-9 7.874135485436185E-12 5.489092925386076E-10 -3.57859579403049E-13
node 5.033341524877198E-15 -1.227292147267042E-14 7.874135485436185E-12 1.542109444737365E-8 -1.541156327517196E-8 -1.172642703529414E-10
peri 8.577378275941939E-14 -2.16060330637486E-13 5.489092925386076E-10 -1.541156327517196E-8 1.557031183354014E-8 1.1710536646276E-10
i -3.718904420949606E-16 9.106290761250651E-16 -3.57859579403049E-13 -1.172642703529414E-10 1.1710536646276E-10 1.220269339409016E-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 15.72   n/a E2021B10  

46820 (1998 MK28)          Discovered 1998-Jun-24 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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