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(2011 MD)
Classification: Amor [NEO]          SPK-ID: 3568303
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03708572575245402 1.3506e-07  
a 1.056305236498722 1.4511e-06 au
q 1.017131390187049 1.5291e-06 au
i 2.445412363510375 4.7943e-06 deg
node 271.5901049790291 1.8243e-05 deg
peri 5.974515945440755 0.00011877 deg
M 77.93710108892674 0.0028214 deg
tp 2459310.653158090726
(2021-Apr-06.15315809)
0.0029313 TDB
period 396.5359585555515
1.09
0.00081709
2.237e-06
d
yr
n .9078621805481657 1.8707e-06 deg/d
Q 1.095479082810395 1.5049e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.439034215047371E-11 2.478E-11
A2 [EST] -8.855640706196125E-13 3.787E-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .33318  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 05:09:42  

Additional Information
 Earth MOID = .00099071 au 
 Jupiter MOID = 3.89285 au 
 T_jup = 5.826 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455755.5 (2011-Jul-13.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0410595227508973 1.2579e-07  
q 1.016063956459619 3.9296e-09 au
tp 2455743.271190832585
(2011-Jun-30.77119083)
2.3339e-05 TDB
node 273.9597202104457 4.9451e-06 deg
peri 4.674799760516421 1.9658e-05 deg
i 2.562404499994056 4.4106e-06 deg

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.439034215047371E-11 2.478E-11
A2 [EST] -8.855640706196125E-13 3.787E-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .33318  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 05:09:42  

Additional Information
 Jupiter MOID = 3.89285 au 
 T_jup = 5.826 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
Orbit Covariance (8×8)
  e q tp node peri i A1 A2
e 1.582270937634561E-14 -5.537888123864263E-17 2.033359984283123E-12 5.807340876110913E-13 1.425893567376189E-12 5.328277008382144E-13 4.828402261792239E-19 -3.795693398429964E-19
q -5.537888123864263E-17 1.544178005940155E-17 -4.773297052987453E-14 -4.191724258769993E-15 -4.263460731805589E-14 -3.262469071056906E-15 -9.430402554234142E-20 9.198704617887167E-21
tp 2.033359984283123E-12 -4.773297052987453E-14 5.447150137386845E-10 8.380216676947765E-11 4.520281182730765E-10 7.359320964129282E-11 2.360692233156225E-16 -6.277590496894508E-17
node 5.807340876110913E-13 -4.191724258769993E-15 8.380216676947765E-11 2.445439727097633E-11 5.810009091137231E-11 2.043969454061185E-11 3.198267466883152E-17 -1.517430128227876E-17
peri 1.425893567376189E-12 -4.263460731805589E-14 4.520281182730765E-10 5.810009091137231E-11 3.864447196425886E-10 5.210081711477715E-11 1.995609311589948E-16 -4.666333375945063E-17
i 5.328277008382144E-13 -3.262469071056906E-15 7.359320964129282E-11 2.043969454061185E-11 5.210081711477715E-11 1.945310965453641E-11 2.676856273305335E-17 -1.3733430481424E-17
A1 4.828402261792239E-19 -9.430402554234142E-20 2.360692233156225E-16 3.198267466883152E-17 1.995609311589948E-16 2.676856273305335E-17 6.138316667636704E-22 -6.28100746119437E-23
A2 -3.795693398429964E-19 9.198704617887167E-21 -6.277590496894508E-17 -1.517430128227876E-17 -4.666333375945063E-17 -1.3733430481424E-17 -6.28100746119437E-23 1.43381859600475E-23

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. 2020-October); 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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