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154204 (2002 HL8)
Classification: Main-belt Asteroid          SPK-ID: 2154204
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2312516355763489 5.8591e-08  
a 2.973408362298851 2.6271e-08 au
q 2.285802815280848 1.7775e-07 au
i 24.13540254123874 7.7506e-06 deg
node 50.21216272732725 1.0747e-05 deg
peri 218.5303306682302 1.9655e-05 deg
M 172.1902351520643 2.0505e-05 deg
tp 2458104.751101144048
(2017-Dec-17.25110114)
9.9488e-05 TDB
period 1872.751978666873
5.13
2.4819e-05
6.795e-08
d
yr
n .1922304737097475 2.5476e-09 deg/d
Q 3.661013909316853 3.2346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      15429 days (42.24 yr)  
   first obs. used      1977-09-06  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54902  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 12:02:44  

Additional Information
 Earth MOID = 1.31034 au 
 Jupiter MOID = 1.53719 au 
 T_jup = 3.092 
[ 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 14.3   n/a MPO412913  
diameter diameter 7.835 km 0.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

154204 (2002 HL8)          Discovered 2002-Apr-18 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2002 HL8 = 1977 RJ = 1977 TB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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