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180946 (2005 MH12)
Classification: Main-belt Asteroid          SPK-ID: 2180946
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1822547741214425 3.1099e-08  
a 2.459813556559647 1.2206e-08 au
q 2.011500792428007 8.1573e-08 au
i 4.61424462220683 4.439e-06 deg
node 342.9876760552058 4.9917e-05 deg
peri 306.5002013723573 5.2208e-05 deg
M 8.594711500582262 1.5008e-05 deg
tp 2459166.858100013587
(2020-Nov-13.35810001)
5.8704e-05 TDB
period 1409.132115055644
3.86
1.0488e-05
2.871e-08
d
yr
n .2554764000860091 1.9015e-09 deg/d
Q 2.908126320691288 1.443e-08 au
  Orbit Determination Parameters
   # obs. used (total)      665  
   data-arc span      8909 days (24.39 yr)  
   first obs. used      1996-01-25  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56845  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 09:00:54  

Additional Information
 Earth MOID = .997534 au 
 Jupiter MOID = 2.28616 au 
 T_jup = 3.463 
[ 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 16.29   n/a E2021B55  

180946 (2005 MH12)          Discovered 2005-Jun-28 by NEAT at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2005 MH12 = 2004 FR39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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