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213527 (2002 HE12)
Classification: Main-belt Asteroid          SPK-ID: 2213527
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2356172218628418 5.1054e-08  
a 2.278875034647145 1.1797e-08 au
q 1.741932830010997 1.1456e-07 au
i 6.644072563152129 7.1856e-06 deg
node 37.74181261499074 4.0486e-05 deg
peri 211.1030303507408 4.4483e-05 deg
M 121.8043659342792 2.2248e-05 deg
tp 2458775.352580432129
(2019-Oct-18.85258043)
7.5374e-05 TDB
period 1256.548317217258
3.44
9.7573e-06
2.671e-08
d
yr
n .286499130250123 2.2247e-09 deg/d
Q 2.815817239283293 1.4577e-08 au
  Orbit Determination Parameters
   # obs. used (total)      344  
   data-arc span      9384 days (25.69 yr)  
   first obs. used      1995-03-30  
   last obs. used      2020-12-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63494  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:43:04  

Additional Information
 Earth MOID = .730978 au 
 Jupiter MOID = 2.22902 au 
 T_jup = 3.561 
[ 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 16.93   n/a MPCxxxxx  

213527 (2002 HE12)          Discovered 2002-Apr-29 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 2002 HE12 = 1995 FF21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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