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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1229121489780845 3.9003e-08  
a 2.268123508138992 8.7795e-09 au
q 1.989343573605916 9.1457e-08 au
i 5.455567992120382 4.0591e-06 deg
node 283.9173501079687 4.0457e-05 deg
peri 163.1959106288469 4.4089e-05 deg
M 14.63975488615153 1.6924e-05 deg
tp 2458949.762416236350
(2020-Apr-10.26241624)
5.8649e-05 TDB
period 1247.666391750329
3.42
7.2443e-06
1.983e-08
d
yr
n .2885386689746146 1.6753e-09 deg/d
Q 2.546903442672067 9.8586e-09 au
  Orbit Determination Parameters
   # obs. used (total)      963  
   data-arc span      10996 days (30.11 yr)  
   first obs. used      1990-02-24  
   last obs. used      2020-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:37:22  

Additional Information
 Earth MOID = 1.00646 au 
 Jupiter MOID = 2.62835 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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