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JPL Small-Body Database Browser
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48699 (1996 HN21)
Classification: Main-belt Asteroid          SPK-ID: 2048699
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1453207292877566 4.5844e-08  
a 2.755995153952568 1.5372e-08 au
q 2.355491928266658 1.262e-07 au
i 12.75965688080818 5.1235e-06 deg
node 49.9881544782178 1.7215e-05 deg
peri 356.5083439520539 2.2028e-05 deg
M 274.2783728653153 1.453e-05 deg
tp 2459398.427548659347
(2021-Jul-02.92754866)
6.8946e-05 TDB
period 1671.152570310947
4.58
1.3982e-05
3.828e-08
d
yr
n .2154201874775657 1.8023e-09 deg/d
Q 3.156498379638478 1.7606e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1070  
   data-arc span      8502 days (23.28 yr)  
   first obs. used      1996-04-18  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57359  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:12:14  

Additional Information
 Earth MOID = 1.3655 au 
 Jupiter MOID = 2.24163 au 
 T_jup = 3.293 
[ 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 14.2   n/a MPO436123  

48699 (1996 HN21)          Discovered 1996-Apr-18 by Elst, E. W. at La Silla
Reference: 20021120/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
2008-Feb-03 03:54 < 00:01 Amphi 0.0365493397680049 0.0365483267847206 0.03655035275491 3.7548698799182 3.75486983802934 2454499.662388391 0.621301624386209 55.6691934059387 32.0493077657619 -31.0272518015669 121650.702072719 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 09:12:30 2020-Feb-23 09:12
2150-Aug-23 03:42 < 00:01 David 0.0467451051447004 0.0467322975229832 0.0467579287125715 4.43229264867469 4.43229257575942 2506565.654254170 0.8689472614509 1504.45570990831 31.8081463488609 -64.9089419791478 198966.606779447 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 09:12:30 2020-Feb-23 09:12

Alternate Designations
 1996 HN21 = 1998 XX32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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