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19128 (1987 YR1)
Classification: Main-belt Asteroid          SPK-ID: 2019128
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1888542620235946 3.769e-08  
a 2.716091676171389 1.5861e-08 au
q 2.203146187079613 1.0462e-07 au
i 13.89834729537524 6.7184e-06 deg
node 226.5007730358708 1.7828e-05 deg
peri 245.3301409770993 2.5112e-05 deg
M 71.62468831206958 1.7425e-05 deg
tp 2458675.206557873701
(2019-Jul-10.70655787)
7.8668e-05 TDB
period 1634.989860692126
4.48
1.4322e-05
3.921e-08
d
yr
n .2201848516954132 1.9287e-09 deg/d
Q 3.229037165263164 1.8857e-08 au
  Orbit Determination Parameters
   # obs. used (total)      926  
   data-arc span      11733 days (32.12 yr)  
   first obs. used      1987-12-17  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:42:12  

Additional Information
 Earth MOID = 1.25951 au 
 Jupiter MOID = 2.13309 au 
 T_jup = 3.293 
[ 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 14.4   n/a MPO384918  
diameter diameter 3.549 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.321   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19128 (1987 YR1)          Discovered 1987-Dec-17 by Elst, E. W., Pizarro, G. at La Silla
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1987 YR1 = 1998 KY23 = 2000 ST305 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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