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15864 (1996 HQ23)
Classification: Main-belt Asteroid          SPK-ID: 2015864
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1471445671106356 3.9521e-08  
a 2.228743573042098 6.6721e-09 au
q 1.900796064786207 8.9812e-08 au
i 1.106037604668505 3.8599e-06 deg
node 139.2866338840906 0.0002107 deg
peri 266.6891034278218 0.0002111 deg
M 266.1460349382863 1.3667e-05 deg
tp 2459317.339053238081
(2021-Apr-12.83905324)
4.6637e-05 TDB
period 1215.314228767082
3.33
5.4573e-06
1.494e-08
d
yr
n .2962196866280538 1.3302e-09 deg/d
Q 2.556691081297989 7.6538e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1615  
   data-arc span      15667 days (42.89 yr)  
   first obs. used      1977-09-09  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4908  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:02:30  

Additional Information
 Earth MOID = .910589 au 
 Jupiter MOID = 2.80666 au 
 T_jup = 3.629 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457028.5 (2015-Jan-06.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1473900010684837 3.9485e-08  
q 1.899610146207632 8.9689e-08 au
tp 2456888.307160604646
(2014-Aug-18.80716060)
4.3691e-05 TDB
node 139.3070207357119 0.00021107 deg
peri 266.8386084158327 0.00021147 deg
i 1.104843982260217 3.8575e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1615  
   data-arc span      15667 days (42.89 yr)  
   first obs. used      1977-09-09  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4908  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:02:30  

Additional Information
 Jupiter MOID = 2.80666 au 
 T_jup = 3.629 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.559043295618842E-15 -3.534855312255984E-15 -7.451016671497479E-13 -3.475175018773188E-15 -2.236670636040184E-13 -5.078431199231437E-16
q -3.534855312255984E-15 8.044027809572905E-15 1.690749584697958E-12 8.182923402602799E-15 5.079646383994808E-13 1.165522881479252E-15
tp -7.451016671497479E-13 1.690749584697958E-12 1.908933227797917E-9 8.485284542137609E-12 5.809974022589547E-10 4.46772052031292E-13
node -3.475175018773188E-15 8.182923402602799E-15 8.485284542137609E-12 4.455098267733855E-8 -4.453972997569933E-8 3.016352111202352E-10
peri -2.236670636040184E-13 5.079646383994808E-13 5.809974022589547E-10 -4.453972997569933E-8 4.471771730947068E-8 -3.014417387777919E-10
i -5.078431199231437E-16 1.165522881479252E-15 4.46772052031292E-13 3.016352111202352E-10 -3.014417387777919E-10 1.488050149862663E-11

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 15.2   n/a MPO365443  
diameter diameter 2.637 km 0.619 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.232   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15864 (1996 HQ23)          Discovered 1996-Apr-20 by Elst, E. W. at La Silla
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 HQ23 = 1977 RU14 = 1987 SC29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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