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19562 (1999 JM81)
Classification: Main-belt Asteroid          SPK-ID: 2019562
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1909762092393346 2.4632e-08  
a 2.593076240412131 9.753e-09 au
q 2.097860369749637 6.5272e-08 au
i 12.25356381323168 1.1935e-06 deg
node 282.7739618348943 4.7802e-06 deg
peri 69.28127319624637 1.0901e-05 deg
M 17.50601171056486 5.4974e-06 deg
tp 2459126.333792891708
(2020-Oct-03.83379289)
2.3403e-05 TDB
period 1525.180892165856
4.18
8.6047e-06
2.356e-08
d
yr
n .2360375755093394 1.3317e-09 deg/d
Q 3.088292111074625 1.1616e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2196  
   data-arc span      24178 days (66.20 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39846  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:57:59  

Additional Information
 Earth MOID = 1.12529 au 
 Jupiter MOID = 2.43242 au 
 T_jup = 3.361 
[ 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 13.43   n/a E2021B10  
diameter diameter 6.939 km 0.332 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.211   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19562 (1999 JM81)          Discovered 1999-May-14 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JM81 = 1978 PT = 1987 XC1 = 1991 VE7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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