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48404 (1981 EQ41)
Classification: Main-belt Asteroid          SPK-ID: 2048404
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1006362735191194 3.8673e-08  
a 2.806600268913744 1.5158e-08 au
q 2.524154476592507 1.1118e-07 au
i 4.881837998727786 4.7469e-06 deg
node 337.9299588774919 4.736e-05 deg
peri 62.90021463406154 5.2812e-05 deg
M 258.8226215867969 2.4472e-05 deg
tp 2459483.169873001616
(2021-Sep-25.66987300)
0.00011839 TDB
period 1717.391347806525
4.70
1.3913e-05
3.809e-08
d
yr
n .209620247860103 1.6982e-09 deg/d
Q 3.089046061234981 1.6684e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1039  
   data-arc span      14414 days (39.46 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5298  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 04:33:45  

Additional Information
 Earth MOID = 1.53652 au 
 Jupiter MOID = 2.28958 au 
 T_jup = 3.310 
[ 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 14.4   n/a MPO436121  
diameter diameter 9.054 km 0.329 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48404 (1981 EQ41)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2065-Feb-13 13:31 < 00:01 Europ 0.0141495312664871 0.0141487806398469 0.0141502838660294 3.9753733591197 3.97537317016759 2475330.063384694 0.714810922978065 497.888480250856 31.7538802703775 87.7085281853432 66558.7240678484 T 25 CATAB v2.0f-lin.ifort 2020-Aug-25 04:33:57 2020-Aug-25 04:33
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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