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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .100636273133552 4.2282e-08  
a 2.806600268772337 1.5851e-08 au
q 2.524154477547463 1.195e-07 au
i 4.881838507640211 4.9957e-06 deg
node 337.9299636718825 4.9714e-05 deg
peri 62.90020988012119 5.5074e-05 deg
M 258.822621623675 2.4498e-05 deg
tp 2459483.169872789209
(2021-Sep-25.66987279)
0.00011846 TDB
period 1717.391347676731
4.70
1.4549e-05
3.983e-08
d
yr
n .2096202478759452 1.7758e-09 deg/d
Q 3.08904605999721 1.7446e-08 au
  Orbit Determination Parameters
   # obs. used (total)      969  
   data-arc span      14370 days (39.34 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54447  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:48:52  

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

[ hide close-approach data ]
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 24 CATAB v2.0f-lin.ifort 2020-Jun-23 21:49:08 2020-Jun-23 21:49
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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