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19491 (1998 HG153)
Classification: Main-belt Asteroid          SPK-ID: 2019491
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1834802576710997 1.2554e-08  
a 2.66101643890123 1.145e-08 au
q 2.1727724570246 3.6012e-08 au
i 16.96885704563909 5.5367e-07 deg
node 153.6413886188536 3.9636e-06 deg
peri 243.4399990272756 7.4999e-06 deg
M 229.452291181742 9.5837e-06 deg
tp 2459775.458523352562
(2022-Jul-14.95852335)
4.422e-05 TDB
period 1585.512838797321
4.34
1.0234e-05
2.802e-08
d
yr
n .2270558718862695 1.4655e-09 deg/d
Q 3.149260420777859 1.3551e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2142  
   data-arc span      10569 days (28.94 yr)  
   first obs. used      1991-09-04  
   last obs. used      2020-08-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .442  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:55:01  

Additional Information
 Earth MOID = 1.22963 au 
 Jupiter MOID = 2.46809 au 
 T_jup = 3.300 
[ 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 13.52   n/a MPCxxxxx  
diameter diameter 7.092 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.184   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19491 (1998 HG153)          Discovered 1998-Apr-24 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HG153 = 1991 RJ24 = 2000 SY279 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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