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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1469614489002659 3.3852e-08  
a 2.227814452521842 6.4069e-09 au
q 1.900411612698279 7.812e-08 au
i 1.106390759528037 3.7708e-06 deg
node 139.2861593592544 0.00016331 deg
peri 266.8662826652533 0.00016382 deg
M 23.32521150379246 1.3705e-05 deg
tp 2459317.806286093602
(2021-Apr-13.30628609)
4.6101e-05 TDB
period 1214.554346128747
3.33
5.2394e-06
1.434e-08
d
yr
n .2964050156729988 1.2786e-09 deg/d
Q 2.555217292345404 7.3485e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1847  
   data-arc span      15860 days (43.42 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47648  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:04:33  

Additional Information
 Earth MOID = .909696 au 
 Jupiter MOID = 2.80853 au 
 T_jup = 3.630 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457537.5 (2016-May-29.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481748751342909 3.3905e-08  
q 1.897409218315087 7.8335e-08 au
tp 2458102.820333830728
(2017-Dec-15.32033383)
4.3592e-05 TDB
node 139.3245151336655 0.00016358 deg
peri 266.7812571501436 0.00016408 deg
i 1.105556143957259 3.7684e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1847  
   data-arc span      15860 days (43.42 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47648  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:04:33  

Additional Information
 Jupiter MOID = 2.80853 au 
 T_jup = 3.630 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.149576312434004E-15 -2.650894788844418E-15 -6.416054984267166E-13 1.74336384430562E-15 -1.522226772931984E-13 -3.855863894237399E-16
q -2.650894788844418E-15 6.136300018205136E-15 1.502543778637781E-12 -4.40394010972559E-15 3.548376299795605E-13 9.004318361710612E-16
tp -6.416054984267166E-13 1.502543778637781E-12 1.900269346873842E-9 -6.416617210392041E-12 5.653690890678635E-10 4.045879818930735E-13
node 1.74336384430562E-15 -4.40394010972559E-15 -6.416617210392041E-12 2.675816159211452E-8 -2.675461129795627E-8 2.126160215609866E-10
peri -1.522226772931984E-13 3.548376299795605E-13 5.653690890678635E-10 -2.675461129795627E-8 2.692316896410262E-8 -2.124700170407187E-10
i -3.855863894237399E-16 9.004318361710612E-16 4.045879818930735E-13 2.126160215609866E-10 -2.124700170407187E-10 1.420117651583004E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.25   n/a E2021B10  
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

Alternate Designations
 1996 HQ23 = 1977 RU14 = 1987 SC29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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