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512244 (2015 YE18)
Classification: Apollo [NEO]          SPK-ID: 2512244
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 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5409155821488679 2.9312e-07  
a 1.037401878402005 1.7398e-08 au
q .4762550374238556 2.9914e-07 au
i 31.02734805508481 1.4556e-05 deg
node 256.7303968965148 1.913e-05 deg
peri 80.57339720166614 2.2822e-05 deg
M 175.4480380369814 3.349e-05 deg
tp 2458812.410311507607
(2019-Nov-24.91031151)
3.1906e-05 TDB
period 385.9392707656785
1.06
9.7085e-06
2.658e-08
d
yr
n .9327892424261032 2.3465e-08 deg/d
Q 1.598548719380155 2.6808e-08 au
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      1846 days (5.05 yr)  
   first obs. used      2015-12-31  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .48892  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-19 05:28:33  

Additional Information
 Earth MOID = .121895 au 
 Jupiter MOID = 4.0392 au 
 T_jup = 5.659 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457912.5 (2017-Jun-08.0) TDB
Reference: JPL 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5408400959090589 2.9299e-07  
q .4762821267006694 2.9819e-07 au
tp 2458040.724644006179
(2017-Oct-14.22464401)
1.7848e-05 TDB
node 256.7391634319494 1.9124e-05 deg
peri 80.59154108079832 2.2963e-05 deg
i 31.02883970751178 1.4564e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      1846 days (5.05 yr)  
   first obs. used      2015-12-31  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .48892  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-19 05:28:33  

Additional Information
 Jupiter MOID = 4.0392 au 
 T_jup = 5.659 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.584249394514555E-14 -8.734741795362976E-14 3.898881980027608E-12 2.198747875677794E-12 -4.583535927567138E-12 2.415582146284528E-12
q -8.734741795362976E-14 8.891834940802663E-14 -3.989632373728276E-12 -2.227591119923881E-12 4.654282967205047E-12 -2.443504989520951E-12
tp 3.898881980027608E-12 -3.989632373728276E-12 3.185519879089311E-10 8.459837251395954E-11 -1.465490367998341E-10 8.638767045973565E-11
node 2.198747875677794E-12 -2.227591119923881E-12 8.459837251395954E-11 3.657367634551894E-10 -3.782881654107853E-10 2.168650053213702E-10
peri -4.583535927567138E-12 4.654282967205047E-12 -1.465490367998341E-10 -3.782881654107853E-10 5.272794228241412E-10 -2.611024871881981E-10
i 2.415582146284528E-12 -2.443504989520951E-12 8.638767045973565E-11 2.168650053213702E-10 -2.611024871881981E-10 2.121185253728604E-10

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 17.8   n/a MPO437934  

512244 (2015 YE18)          Discovered 2015-Dec-31 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2018-02-05

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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