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18935 Alfandmedina (2000 QE37)
Classification: Main-belt Asteroid          SPK-ID: 2018935
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1515539273087962 3.6734e-08  
a 2.217090630343508 5.4843e-09 au
q 1.881081838115415 8.2512e-08 au
i 2.888180291173715 3.8059e-06 deg
node 166.6842501879052 5.6303e-05 deg
peri 220.3948205157111 5.7402e-05 deg
M 9.56241057634716 9.603e-06 deg
tp 2459168.471361122249
(2020-Nov-14.97136112)
3.218e-05 TDB
period 1205.795327854965
3.30
4.4741e-06
1.225e-08
d
yr
n .2985581314537166 1.1078e-09 deg/d
Q 2.553099422571602 6.3155e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1750  
   data-arc span      13725 days (37.58 yr)  
   first obs. used      1983-07-10  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49635  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:42:48  

Additional Information
 Earth MOID = .885131 au 
 Jupiter MOID = 2.88895 au 
 T_jup = 3.636 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO474016  
diameter diameter 2.229 km 0.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.246   0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18935 Alfandmedina           Discovered 2000 Aug. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Alfredo Andres Medina (b. 1985) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for his behavioral and social sciences project. He attends the Academia del Perpetuo Socorro, San Juan, Puerto Rico, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

Alternate Designations
 2000 QE37 = 1996 HT23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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