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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09560328786239489 4.6064e-08  
a 1.866701216497404 6.3894e-09 au
q 1.68823844274352 8.6289e-08 au
i 22.9679672206553 5.3542e-06 deg
node 200.6433849325807 9.2366e-06 deg
peri 178.4585432753344 2.1541e-05 deg
M 139.9254345678461 1.8662e-05 deg
tp 2458238.419775218106
(2018-Apr-29.91977522)
4.8185e-05 TDB
period 931.5595933223919
2.55
4.7829e-06
1.309e-08
d
yr
n .3864487066426592 1.9841e-09 deg/d
Q 2.045163990251288 7.0003e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1153  
   data-arc span      7336 days (20.08 yr)  
   first obs. used      1999-04-10  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50477  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:49:14  

Additional Information
 Earth MOID = .690275 au 
 Jupiter MOID = 3.2701 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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