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JPL Small-Body Database Browser
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48406 (1981 EQ47)
Classification: Main-belt Asteroid          SPK-ID: 2048406
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 .1518535190970725 4.2745e-08  
a 2.431398895370771 7.4895e-09 au
q 2.062182416779985 1.0376e-07 au
i 1.653972108357822 3.5857e-06 deg
node 127.1487030346869 0.00014934 deg
peri 279.5452444989801 0.00014994 deg
M 246.9455159078844 1.2147e-05 deg
tp 2459435.378604245018
(2021-Aug-08.87860424)
4.6952e-05 TDB
period 1384.786271729356
3.79
6.3984e-06
1.752e-08
d
yr
n .2599679151573499 1.2012e-09 deg/d
Q 2.800615373961558 8.6269e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1396  
   data-arc span      13970 days (38.25 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53782  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:38:03  

Additional Information
 Earth MOID = 1.07259 au 
 Jupiter MOID = 2.5709 au 
 T_jup = 3.491 
[ 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 15.2   n/a MPO337644  
rotation period rot_per 78.294 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

48406 (1981 EQ47)          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
2024-Feb-11 20:30 < 00:01 Iris 0.026007990320439 0.026006982105017 0.0260089986285743 2.38082064595523 2.38082055311428 2460352.354270536 0.970843132934263 103.532228237868 26.1384578750407 -64.678134469435 135296.967642464 T 24 CATAB v2.0e-lin.ifort 2019-May-30 04:38:12 2019-May-30 04:38

Alternate Designations
 1981 EQ47 = 1992 DX13 = 1996 CL9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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