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22439 (1996 HL20)
Classification: Outer Main-belt Asteroid          SPK-ID: 2022439
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1241701025563838 4.2117e-08  
a 3.225188000080176 1.849e-08 au
q 2.824716075346602 1.355e-07 au
i 2.45006754912269 4.1921e-06 deg
node 69.34201515966204 9.9305e-05 deg
peri 101.1431621466327 0.0001005 deg
M 130.813384937882 1.5174e-05 deg
tp 2458431.757905547972
(2018-Nov-09.25790555)
8.962e-05 TDB
period 2115.587438809464
5.79
1.8193e-05
4.981e-08
d
yr
n .1701655026854329 1.4633e-09 deg/d
Q 3.62565992481375 2.0786e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1329  
   data-arc span      9351 days (25.60 yr)  
   first obs. used      1994-12-02  
   last obs. used      2020-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49885  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:06:21  

Additional Information
 Earth MOID = 1.83162 au 
 Jupiter MOID = 1.34223 au 
 T_jup = 3.174 
[ 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 13.71   n/a E2021B10  
diameter diameter 9.128 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 1.33 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.064   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22439 (1996 HL20)          Discovered 1996-Apr-18 by Elst, E. W. at La Silla
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1996 HL20 = 1999 VG20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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