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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .540957748010606 2.9314e-07  
a 1.037387624513407 1.7413e-08 au
q .4762047513425622 2.9916e-07 au
i 31.02735658420222 1.4555e-05 deg
node 256.7280255208206 1.913e-05 deg
peri 80.57560992435081 2.282e-05 deg
M 2.010966673250225 3.7619e-05 deg
tp 2459198.344180511583
(2020-Dec-14.84418051)
4.0281e-05 TDB
period 385.9313165920029
1.06
9.7169e-06
2.66e-08
d
yr
n .9328084675247621 2.3486e-08 deg/d
Q 1.598570497684252 2.6832e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .48892  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-18 06:27:22  

Additional Information
 Earth MOID = .122163 au 
 Jupiter MOID = 4.03906 au 
 T_jup = 5.659 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457914.5 (2017-Jun-10.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5408396398380458 2.9299e-07  
q .4762826788917801 2.9819e-07 au
tp 2458040.724720867801
(2017-Oct-14.22472087)
1.7848e-05 TDB
node 256.7390634034907 1.9124e-05 deg
peri 80.59162293866076 2.2962e-05 deg
i 31.02885221027801 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .48892  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-18 06:27:22  

Additional Information
 Jupiter MOID = 4.03906 au 
 T_jup = 5.659 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.584125847714808E-14 -8.734620884707082E-14 3.898755139968858E-12 2.19867868204191E-12 -4.583440531901537E-12 2.415524883040895E-12
q -8.734620884707082E-14 8.89171678530618E-14 -3.989506754507938E-12 -2.227522550857825E-12 4.654188384185513E-12 -2.443448159474816E-12
tp 3.898755139968858E-12 -3.989506754507938E-12 3.185420509019018E-10 8.459161943518489E-11 -1.465390026481294E-10 8.638186390288359E-11
node 2.19867868204191E-12 -2.227522550857825E-12 8.459161943518489E-11 3.657339993375629E-10 -3.782839470419391E-10 2.168623995106024E-10
peri -4.583440531901537E-12 4.654188384185513E-12 -1.465390026481294E-10 -3.782839470419391E-10 5.2727350084378E-10 -2.610987397698637E-10
i 2.415524883040895E-12 -2.443448159474816E-12 8.638186390288359E-11 2.168623995106024E-10 -2.610987397698637E-10 2.121161261128554E-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 17.88   n/a MPCxxxxx  

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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