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213529 (2002 HC18)
Classification: Main-belt Asteroid          SPK-ID: 2213529
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2490929956813421 4.7852e-08  
a 2.314173429160135 8.6084e-09 au
q 1.737729037164473 1.1095e-07 au
i 6.351777635879686 4.5099e-06 deg
node 48.99841175239373 4.8108e-05 deg
peri 263.0040920170094 5.0866e-05 deg
M 49.31511631045816 1.3436e-05 deg
tp 2459024.355193822427
(2020-Jun-23.85519382)
4.8233e-05 TDB
period 1285.855838293511
3.52
7.1748e-06
1.964e-08
d
yr
n .279969176387428 1.5622e-09 deg/d
Q 2.890617821155797 1.0753e-08 au
  Orbit Determination Parameters
   # obs. used (total)      456  
   data-arc span      7759 days (21.24 yr)  
   first obs. used      1999-10-09  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47694  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:43:04  

Additional Information
 Earth MOID = .736063 au 
 Jupiter MOID = 2.42412 au 
 T_jup = 3.532 
[ 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 17.25   n/a E2021B55  

213529 (2002 HC18)          Discovered 2002-Apr-21 by Spacewatch at Kitt Peak
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ 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
1959-Apr-25 22:21 < 00:01 Hebe 0.0419893787256971 0.0419827371304065 0.041996020706355 6.77618880949881 6.77618878764976 2436684.431284325 0.654939346940273 390.29857342718 79.5215039562057 -32.7302300618044 44793.0694244855 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:43:05 2021-Apr-13 23:43

Alternate Designations
 2002 HC18 = 2006 SU54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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