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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .146961448897185 3.3852e-08  
a 2.227814452540153 6.4069e-09 au
q 1.900411612720764 7.812e-08 au
i 1.106390759544932 3.7708e-06 deg
node 139.286159356233 0.00016331 deg
peri 266.8662826676276 0.00016382 deg
M 23.32521150434789 1.3705e-05 deg
tp 2459317.806286090758
(2021-Apr-13.30628609)
4.6101e-05 TDB
period 1214.554346143721
3.33
5.2394e-06
1.434e-08
d
yr
n .2964050156693444 1.2786e-09 deg/d
Q 2.555217292359544 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      .47647  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:11:35  

Additional Information
 Earth MOID = .909696 au 
 Jupiter MOID = 2.80853 au 
 T_jup = 3.630 
[ 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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1985-Jan-03 13:45 00:01 Iris 0.0245956151869657 0.0245943244798518 0.0245969062939947 2.73664940937261 2.73664932396508 2446069.073047767 1.29293011839252 178.506950233664 22.2863616218457 70.0953304761548 155211.617873396 T 27 CATAB v2.0f-lin.ifort 2021-Apr-13 01:11:48 2021-Apr-13 01:11
2156-Aug-03 18:16 00:12 Thisb 0.0303455032305393 0.0303343156640648 0.0303566936465091 3.07969217228922 3.07969209933119 2508738.260793270 11.6523157454202 725.088739601724 25.6175158755903 -39.7881126712085 113396.55052039 T 27 CATAB v2.0f-lin.ifort 2021-Apr-13 01:11:48 2021-Apr-13 01:11

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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