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15865 (1996 HW25)
Classification: Main-belt Asteroid          SPK-ID: 2015865
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2115974229406796 4.9264e-08  
a 2.316283523892437 7.4525e-09 au
q 1.826163899436841 1.1429e-07 au
i 6.328301652116791 4.06e-06 deg
node 75.36146789907222 3.5132e-05 deg
peri 285.9103387767774 3.6222e-05 deg
M 238.7339345054831 1.0346e-05 deg
tp 2459634.233323537357
(2022-Feb-23.73332354)
3.763e-05 TDB
period 1287.614930332745
3.53
6.2142e-06
1.701e-08
d
yr
n .2795866928220295 1.3493e-09 deg/d
Q 2.806403148348033 9.0294e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1765  
   data-arc span      9039 days (24.75 yr)  
   first obs. used      1996-04-20  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5174  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:11:38  

Additional Information
 Earth MOID = .834382 au 
 Jupiter MOID = 2.66984 au 
 T_jup = 3.543 
[ 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 14.55   n/a E2021B10  
diameter diameter 3.966 km 0.300 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.59268 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.235   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15865 (1996 HW25)          Discovered 1996-Apr-20 by Elst, E. W. at La Silla
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 HW25 = 1997 WQ41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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