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JPL Small-Body Database Browser
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249685 (1999 YD4)
Classification: Mars-crossing Asteroid          SPK-ID: 2249685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2991681396781595 8.0716e-08  
a 2.363136326118485 8.3133e-09 au
q 1.656161227627737 1.8912e-07 au
i 23.32965793584489 9.639e-06 deg
node 3.157315467765507 1.2213e-05 deg
peri 41.65659815562282 1.7713e-05 deg
M 147.8120432310464 9.344e-06 deg
tp 2458055.697727085971
(2017-Oct-29.19772709)
3.3698e-05 TDB
period 1326.879826310766
3.63
7.0017e-06
1.917e-08
d
yr
n .2713131911884876 1.4317e-09 deg/d
Q 3.070111424609232 1.08e-08 au
  Orbit Determination Parameters
   # obs. used (total)      586  
   data-arc span      7096 days (19.43 yr)  
   first obs. used      1999-12-19  
   last obs. used      2019-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55661  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:18:57  

Additional Information
 Earth MOID = .708326 au 
 Jupiter MOID = 2.55398 au 
 T_jup = 3.383 
[ 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 15.6   n/a MPO437159  

249685 (1999 YD4)          Discovered 1999-Dec-19 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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