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48686 (1996 EM1)
Classification: Main-belt Asteroid          SPK-ID: 2048686
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2049490613063135 5.4039e-08  
a 2.58741288875015 1.178e-08 au
q 2.057125045988951 1.3807e-07 au
i 10.87787375251724 5.2735e-06 deg
node 335.5729520144152 2.4045e-05 deg
peri 229.8309591270709 2.5554e-05 deg
M 272.2582230039131 1.0145e-05 deg
tp 2459371.010873269315
(2021-Jun-05.51087327)
4.3573e-05 TDB
period 1520.18706417243
4.16
1.0382e-05
2.842e-08
d
yr
n .2368129610390937 1.6173e-09 deg/d
Q 3.11770073151135 1.4194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1138  
   data-arc span      21651 days (59.28 yr)  
   first obs. used      1960-10-22  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:11:57  

Additional Information
 Earth MOID = 1.07345 au 
 Jupiter MOID = 1.93238 au 
 T_jup = 3.367 
[ 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 14.5   n/a MPO502480  
diameter diameter 3.434 km 0.566 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.313   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48686 (1996 EM1)          Discovered 1996-Mar-10 by Endate, K., Watanabe, K. at Kitami
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 EM1 = 1999 XM165 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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