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80019 (1999 HL2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2080019
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09535131391349373 3.9412e-08  
a 1.867047729894933 4.9498e-09 au
q 1.689022275710246 7.5549e-08 au
i 22.96407938034007 3.8018e-06 deg
node 200.6259979169095 7.0628e-06 deg
peri 178.3813858563442 1.9388e-05 deg
M 294.5724551611348 1.6076e-05 deg
tp 2459169.851746838692
(2020-Nov-16.35174684)
4.1434e-05 TDB
period 931.8189917117872
2.55
3.7055e-06
1.015e-08
d
yr
n .386341127624654 1.5364e-09 deg/d
Q 2.045073184079621 5.4217e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1914  
   data-arc span      7891 days (21.60 yr)  
   first obs. used      1999-04-10  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43636  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:08:27  

Additional Information
 Earth MOID = .691807 au 
 Jupiter MOID = 3.26825 au 
 T_jup = 3.885 
[ 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 15.3   n/a MPO474691  
diameter diameter 2.129 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.401   0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

80019 (1999 HL2)          Discovered 1999-Apr-23 by Korlevic, K., Juric, M. at Visnjan
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1999 HL2 = 2000 YL21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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