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JPL Small-Body Database Browser
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(2011 MD)
Classification: Apollo [NEO]          SPK-ID: 3568303
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2455755.5 (2011-Jul-13.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04105952204965695 1.2558e-07  
a 1.059569367479931 1.3836e-07 au
q 1.016063955672748 3.9299e-09 au
i 2.562405187085439 4.4038e-06 deg
node 273.9597202527767 4.9485e-06 deg
peri 4.674810078016545 1.9656e-05 deg
M 11.05080146327758 2.2612e-05 deg
tp 2455743.271201360355
(2011-Jun-30.77120136)
2.3334e-05 TDB
period 398.3754051596628
1.09
7.8029e-05
2.136e-07
d
yr
n .9036702450436606 1.77e-07 deg/d
Q 1.103074779287115 1.4404e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.697582474508263E-11 2.478E-11
A2 [EST] -1.103418670407787E-12 3.784E-12
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      528  
   data-arc span      967 days (2.65 yr)  
   first obs. used      2011-06-21  
   last obs. used      2014-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .33404  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-14 16:02:08  

Additional Information
 Earth MOID = .000305757 au 
 Jupiter MOID = 3.88419 au 
 T_jup = 5.812 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 28.0   n/a MPO254804  
rotation period rot_per 0.1937 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Ryan, W. (2011) http://infohost.nmt.edu/~bryan/research/work/mro_images/]
[Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]

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