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24877 (1996 HW20)
Classification: Main-belt Asteroid          SPK-ID: 2024877
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .192177016597375 4.7615e-08  
a 3.16825668048389 1.7713e-08 au
q 2.559390563813793 1.4483e-07 au
i 2.010431373224911 4.218e-06 deg
node 145.7715736025791 0.00012178 deg
peri 185.9086828192719 0.00012222 deg
M 52.12071956942721 1.0751e-05 deg
tp 2458902.279929939868
(2020-Feb-22.77992994)
6.0783e-05 TDB
period 2059.818554090374
5.64
1.7274e-05
4.729e-08
d
yr
n .174772675624809 1.4657e-09 deg/d
Q 3.777122797153987 2.1117e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1194  
   data-arc span      10302 days (28.21 yr)  
   first obs. used      1992-11-18  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51075  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:50:49  

Additional Information
 Earth MOID = 1.54693 au 
 Jupiter MOID = 1.59545 au 
 T_jup = 3.173 
[ 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 14.43   n/a E2021B10  
diameter diameter 6.092 km 0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.091   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24877 (1996 HW20)          Discovered 1996-Apr-18 by Elst, E. W. at La Silla
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 HW20 = 1994 AM8 = 1995 EF4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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