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9446 Cicero (1997 JT11)
Classification: Main-belt Asteroid          SPK-ID: 2009446
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1371538714081722 3.2007e-08  
a 3.161191187541346 1.8042e-08 au
q 2.727621577908653 1.0342e-07 au
i 1.499796263866398 4.1102e-06 deg
node 163.3843665483325 0.00014095 deg
peri 92.93648734986702 0.00014179 deg
M 7.3004419979359 1.5707e-05 deg
tp 2458958.868579962183
(2020-Apr-19.36857996)
8.9523e-05 TDB
period 2052.932030396471
5.62
1.7575e-05
4.812e-08
d
yr
n .1753589474321151 1.5012e-09 deg/d
Q 3.594760797174039 2.0516e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1902  
   data-arc span      12898 days (35.31 yr)  
   first obs. used      1985-02-21  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51356  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:58:28  

Additional Information
 Earth MOID = 1.71324 au 
 Jupiter MOID = 1.45708 au 
 T_jup = 3.190 
[ 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 13.2   n/a MPO473895  
diameter diameter 13.247 km 0.256 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9446 Cicero (1997 JT11)          Discovered 1997-May-03 by Elst, E. W. at La Silla
Reference: 19981005/Numbers.arcLast Updated: 2004-04-19

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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
1903-Feb-01 00:28 00:03 Jupiter 1.99233353717317 1.99233166146857 1.99233541287936 3.74804871592114 3.63284837751848 2416146.519658838 3.17422676639686 133.408112334746 20.4670872908681 -55.3812824246079 2523939.27403914 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58
1978-May-23 02:54 00:01 Jupiter 1.75898659690391 1.75898580544905 1.75898738835827 2.1791645564831 1.9456818956944 2443651.620639035 1.22561654295861 46.505447745098 10.4463087829557 -89.9477612292851 1794006.56831513 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58
1989-Jan-12 00:21 < 00:01 Jupiter 1.48881644872936 1.48881606018009 1.48881683727829 1.44097359850971 0.96879208906815 2447538.514908692 0.835230156545904 140.221738352069 80.6521172761876 -7.69668544599023 2274141.57499245 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58
1999-Sep-06 08:41 < 00:01 Jupiter 1.55749216442061 1.55749176939145 1.55749255944951 1.83638136432329 1.51149650382955 2451427.862085470 0.472597232130409 56.4407686014047 27.5257175301858 71.8433700751874 2408308.11293189 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58
2010-Apr-18 13:59 < 00:01 Jupiter 1.89342154561135 1.89342116001198 1.89342193121072 3.31731682603462 3.17960540242141 2455305.082406515 0.207037099537035 32.6060977029517 13.5311326370626 -83.346756018725 3664255.67422123 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58
2085-Jul-29 14:00 00:02 Jupiter 1.85199521377298 1.85199409480056 1.85199633274498 2.45917950925891 2.26557947435773 2482801.083216497 1.86309133763814 59.720796148107 19.5964877395021 -73.7014809581358 1645647.22710187 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58
2096-Mar-19 21:28 00:02 Jupiter 1.5391199012583 1.53911917717343 1.53912062534229 1.52348327954933 1.10469137934856 2486687.394345909 2.21413401525717 115.058633831262 64.0833895251414 -23.6662553702701 1847678.74255973 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58
2106-Nov-12 17:28 00:03 Jupiter 1.51968703181294 1.51968622602638 1.51968783759985 1.66192871947171 1.28346181661242 2490576.227912281 2.64255102891569 159.3650975787 48.5540557192719 51.6294965430507 1941898.81411432 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58
2117-Jun-23 19:00 00:03 Jupiter 1.81322845361159 1.81322667396415 1.81323023326201 2.95578434942103 2.79327604683306 2494452.291508007 3.03192254440633 157.397563331857 13.7608579181351 -69.4406761990636 2579347.88260589 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58
2192-Sep-25 20:09 00:05 Jupiter 1.93626804442515 1.93626522653177 1.93627086231942 2.7323222942954 2.56723255517127 2521940.339763494 4.80059906788021 167.332157613423 23.1523141785794 -59.7872969466302 1782307.70969514 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 16:58:43 2020-Jun-23 16:58

Alternate Designations
 1997 JT11 = 1985 DB1 = 1996 CF9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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