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19904 (3487 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2019904
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08778996196589314 3.3996e-08  
a 2.720586269097062 1.2821e-08 au
q 2.4817461040081 9.1264e-08 au
i 3.623832483780006 5.2775e-06 deg
node 12.97503946021482 5.5464e-05 deg
peri 66.84016813552172 6.3754e-05 deg
M 169.304171997311 3.2484e-05 deg
tp 2458429.672253549831
(2018-Nov-07.17225355)		 0.00014584 TDB
period 1639.049915004269
4.49		 1.1586e-05
3.172e-08		 d
yr
n .2196394366666144 1.5526e-09 deg/d
Q 2.959426434186025 1.3946e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1306  
   data-arc span      15601 days (42.71 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49611  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:08:45  

Additional Information
 Earth MOID = 1.49963 au 
 Jupiter MOID = 2.22419 au 
 T_jup = 3.350 
[ 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 14.39   n/a E2021B10  
diameter diameter 4.293 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.241   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19904 (3487 T-3)          Discovered 1977-Oct-16 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 3487 T-3 = 1995 UR12 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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