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JPL Small-Body Database Browser
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19555 (1999 JO77)
Classification: Main-belt Asteroid          SPK-ID: 2019555
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2011782653906805 4.6121e-08  
a 2.570919666074905 1.2683e-08 au
q 2.053706507195168 1.2016e-07 au
i 8.201617568358047 5.02e-06 deg
node 144.9058714187676 2.9829e-05 deg
peri 226.39800608 3.2157e-05 deg
M 281.4782399031238 1.6361e-05 deg
tp 2459328.911768589047
(2021-Apr-24.41176859)
7.0216e-05 TDB
period 1505.674816078918
4.12
1.1142e-05
3.051e-08
d
yr
n .2390954515248604 1.7693e-09 deg/d
Q 3.088132824954641 1.5235e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1667  
   data-arc span      24987 days (68.41 yr)  
   first obs. used      1951-11-28  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52998  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:02:43  

Additional Information
 Earth MOID = 1.06247 au 
 Jupiter MOID = 2.39361 au 
 T_jup = 3.387 
[ 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 13.7   n/a MPO296294  
diameter diameter 4.973 km 0.300 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.284   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19555 (1999 JO77)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JO77 = 1971 ST = 1975 RG2 = 1998 FV17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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