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444193 (2005 SE71)
Classification: Apollo [NEO, PHA]          SPK-ID: 2444193
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 97 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1944510612725341 4.4827e-08  
a 1.06954347429096 1.986e-09 au
q .8615696106379694 4.6848e-08 au
i 24.8324353821572 1.4072e-05 deg
node 39.11899695818374 4.6121e-06 deg
peri 78.2687507793661 4.9654e-06 deg
M 36.95772819062946 6.4609e-06 deg
tp 2458959.023809877463
(2020-Apr-19.52380988)
7.1691e-06 TDB
period 404.0136982202037
1.11
1.1253e-06
3.081e-09
d
yr
n .8910588962352102 2.4819e-09 deg/d
Q 1.27751733794395 2.3722e-09 au
  Orbit Determination Parameters
   # obs. used (total)      464  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      5379 days (14.73 yr)  
   first obs. used      2005-09-30  
   last obs. used      2020-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39274  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-22 06:43:59  

Additional Information
 Earth MOID = .00171794 au 
 Jupiter MOID = 3.86775 au 
 T_jup = 5.672 
[ 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 18.1   n/a MPO437730  
diameter diameter 0.437 km 0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
rotation period rot_per 66.8 h n/a LCDB (Rev. 2019-August); 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:
[Warner, B.D. (2018) Minor Planet Bull. 45, 366-379.]
geometric albedo albedo 0.503   0.186 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

444193 (2005 SE71)          Discovered 2005-Sep-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-10-05

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