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216740 (2005 JR154)
Classification: Main-belt Asteroid          SPK-ID: 2216740
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1461674412380475 5.4954e-08  
a 2.45829823562517 1.3622e-08 au
q 2.098975072723832 1.4088e-07 au
i 1.372839495255244 3.9182e-06 deg
node 228.0102328635315 0.00025485 deg
peri 327.1885979654205 0.00025565 deg
M 39.28876970720832 2.0041e-05 deg
tp 2459046.855786104318
(2020-Jul-16.35578610)
7.8118e-05 TDB
period 1407.830212415573
3.85
1.1702e-05
3.204e-08
d
yr
n .2557126540012999 2.1255e-09 deg/d
Q 2.817621398526508 1.5613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      324  
   data-arc span      7443 days (20.38 yr)  
   first obs. used      1999-12-05  
   last obs. used      2020-04-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57903  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:06  

Additional Information
 Earth MOID = 1.0972 au 
 Jupiter MOID = 2.14033 au 
 T_jup = 3.476 
[ 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 16.89   n/a E2021B55  

216740 (2005 JR154)          Discovered 2005-May-04 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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