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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1227650281511193 4.0884e-08  
a 2.267665857452926 9.2408e-09 au
q 1.989275794625386 9.4866e-08 au
i 5.455490659539486 4.7674e-06 deg
node 283.9186494124048 4.2542e-05 deg
peri 163.2787536945163 4.636e-05 deg
M 259.1230547541205 1.8429e-05 deg
tp 2458950.007452403702
(2020-Apr-10.50745240)
6.4101e-05 TDB
period 1247.288788916536
3.41
7.6241e-06
2.087e-08
d
yr
n .288626020853371 1.7642e-09 deg/d
Q 2.546055920280467 1.0375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      877  
   data-arc span      10841 days (29.68 yr)  
   first obs. used      1990-02-24  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5177  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:37:07  

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 15.6   n/a MPO452831  
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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