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JPL Small-Body Database Browser
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(2011 YH40)
Classification: Apollo [NEO]          SPK-ID: 3591760
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3277826644985473 5.449e-07  
a 1.397378778918517 1.0551e-06 au
q .9393422394508791 1.4353e-07 au
i 11.33800030701793 1.5327e-05 deg
node 294.2454316199315 2.8269e-06 deg
peri 220.8667378675265 4.5047e-05 deg
M 125.9187221589399 0.0018099 deg
tp 2458389.463561364010
(2018-Sep-27.96356136)
0.0027943 TDB
period 603.3504518340018
1.65
0.00068335
1.871e-06
d
yr
n .5966681534847774 6.7578e-07 deg/d
Q 1.855415318386155 1.401e-06 au
  Orbit Determination Parameters
   # obs. used (total)      399  
   # delay obs. used      1  
   # Doppler obs. used      2  
   data-arc span      28 days  
   first obs. used      2011-12-29  
   last obs. used      2012-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .22776  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:51:37  

Additional Information
 Earth MOID = .0121784 au 
 Jupiter MOID = 3.17743 au 
 T_jup = 4.684 
[ 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 22.9   .43321 34 autocmod 2.6i
rotation period rot_per 2.294 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:
[Warner, B.D.; Pravec, P.; Sherrod, P.C.; Pollock, J. (2012) Minor Planet Bull. 39, 140.]

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