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134999 (2001 HC9)
Classification: Main-belt Asteroid          SPK-ID: 2134999
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07253872428365594 4.886e-08  
a 3.171302611867616 2.6662e-08 au
q 2.941260366085313 1.511e-07 au
i 15.89565064273014 8.9539e-06 deg
node 49.28967065641508 1.6813e-05 deg
peri 224.7933334110719 6.3837e-05 deg
M 126.3349615467033 6.2519e-05 deg
tp 2458476.604284072137
(2018-Dec-24.10428407)
0.00035662 TDB
period 2062.789702418928
5.65
2.6013e-05
7.122e-08
d
yr
n .1745209410236276 2.2008e-09 deg/d
Q 3.401344857649919 2.8596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      10295 days (28.19 yr)  
   first obs. used      1992-11-25  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57984  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:11:03  

Additional Information
 Earth MOID = 1.94558 au 
 Jupiter MOID = 1.67401 au 
 T_jup = 3.138 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457714.5 (2016-Nov-22.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07502276827623382 4.7031e-08  
q 2.932617346895316 1.4539e-07 au
tp 2458484.479353582806
(2018-Dec-31.97935358)
0.00035152 TDB
node 49.32623020754543 1.6817e-05 deg
peri 226.4076415119232 6.3132e-05 deg
i 15.8985489705631 8.9607e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      10295 days (28.19 yr)  
   first obs. used      1992-11-25  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57984  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:11:03  

Additional Information
 Jupiter MOID = 1.67401 au 
 T_jup = 3.138 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.211886387843254E-15 -6.745459943782964E-15 -7.859927440088889E-12 1.111079319998338E-15 -1.452473801415919E-12 4.857398204923888E-16
q -6.745459943782964E-15 2.113741107717939E-14 2.62036856151376E-11 -6.945656663446846E-15 4.773150476029993E-12 1.676453952846506E-15
tp -7.859927440088889E-12 2.62036856151376E-11 1.235695897385321E-7 -5.071002310744235E-11 2.139642899902516E-8 3.041663913669555E-11
node 1.111079319998338E-15 -6.945656663446846E-15 -5.071002310744235E-11 2.828031223265932E-10 -2.800807537192793E-10 -7.850786382689227E-11
peri -1.452473801415919E-12 4.773150476029993E-12 2.139642899902516E-8 -2.800807537192793E-10 3.985694217805584E-9 8.027738585337014E-11
i 4.857398204923888E-16 1.676453952846506E-15 3.041663913669555E-11 -7.850786382689227E-11 8.027738585337014E-11 8.0294685363674E-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 14.39   n/a MPCxxxxx  
diameter diameter 8.971 km 0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

134999 (2001 HC9)          Discovered 2001-Apr-16 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ 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
1953-May-20 21:16 00:02 Jupiter 1.75468988544322 1.75468877962939 1.75469099127401 4.57165809574345 4.4648201900105 2434518.385970522 2.29002435197005 336.851138644611 25.5195517317634 -81.7593954687124 1894404.63825749 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 18:11:04 2021-Apr-13 18:11
1964-Apr-08 08:39 00:02 Jupiter 1.77419413122625 1.77419318597205 1.77419507648852 4.74625233646414 4.64457599559718 2438493.860187223 1.85996474032165 408.081830458138 38.4997327405961 -86.4676011207039 1962960.16765316 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 18:11:04 2021-Apr-13 18:11
2072-May-08 17:18 00:02 Jupiter 1.83064603546459 1.83064497636719 1.83064709457208 4.33872528063479 4.23073942483563 2477971.220573987 2.26957272799006 270.87148760993 24.3376150834553 -79.8154924935045 1877989.42594601 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 18:11:04 2021-Apr-13 18:11
2083-Mar-26 13:51 00:03 Jupiter 1.73800538463543 1.73800445270466 1.73800631656798 4.78299225927877 4.67999022682683 2481945.077311384 2.62290444990667 348.447833570751 41.7715855046716 -87.4960098060148 1943292.68666298 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 18:11:04 2021-Apr-13 18:11
2094-Jan-29 20:33 00:03 Jupiter 1.94675807173719 1.94675605044376 1.94676009309413 4.69013106584571 4.59642705444731 2485907.356350833 3.34516333455331 683.915835195983 53.0113534438553 -82.7224116255206 1867704.25282976 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 18:11:04 2021-Apr-13 18:11
2191-May-14 22:04 00:07 Jupiter 1.93750505747218 1.93750150951981 1.93750860550021 3.93502414861119 3.82231232561113 2521440.419393274 7.33053629099657 645.712231702598 19.8944001570355 -72.2977287108162 1747892.60232612 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 18:11:04 2021-Apr-13 18:11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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