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48441 (1990 ET1)
Classification: Main-belt Asteroid          SPK-ID: 2048441
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1227650270868921 3.9241e-08  
a 2.26766585719846 8.8623e-09 au
q 1.98927579681547 9.1851e-08 au
i 5.455491852221031 4.1779e-06 deg
node 283.918654693439 4.1257e-05 deg
peri 163.2787478823115 4.4902e-05 deg
M 259.1230554618223 1.7318e-05 deg
tp 2458950.007449892904
(2020-Apr-10.50744989)
6.0047e-05 TDB
period 1247.288788706589
3.41
7.3118e-06
2.002e-08
d
yr
n .2886260209019533 1.692e-09 deg/d
Q 2.546055917581449 9.9503e-09 au
  Orbit Determination Parameters
   # obs. used (total)      919  
   data-arc span      10875 days (29.77 yr)  
   first obs. used      1990-02-24  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5084  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:11:46  

Additional Information
 Earth MOID = 1.00639 au 
 Jupiter MOID = 2.62994 au 
 T_jup = 3.599 
[ 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 15.7   n/a MPO502479  
diameter diameter 1.686 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.430   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48441 (1990 ET1)          Discovered 1990-Mar-02 by Elst, E. W. at La Silla
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 ET1 = 1999 XO34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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