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4897 Tomhamilton (1987 QD6)
Classification: Main-belt Asteroid          SPK-ID: 2004897
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219045866646873 3.0341e-08  
a 3.056199172866904 1.3736e-08 au
q 2.683634475933605 9.2156e-08 au
i 11.05566412114694 4.373e-06 deg
node 188.4142267303615 1.6695e-05 deg
peri 107.0094804357065 2.4736e-05 deg
M 86.77168875453424 1.7263e-05 deg
tp 2458530.122589774046
(2019-Feb-15.62258977)
9.3584e-05 TDB
period 1951.51056884893
5.34
1.3156e-05
3.602e-08
d
yr
n .1844724828789119 1.2436e-09 deg/d
Q 3.428763869800203 1.541e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2413  
   data-arc span      25367 days (69.45 yr)  
   first obs. used      1950-08-14  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45333  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:24:51  

Additional Information
 Earth MOID = 1.69486 au 
 Jupiter MOID = 1.87328 au 
 T_jup = 3.196 
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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 12.1   n/a MPO502200  
diameter diameter 13.711 km 0.369 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4897 Tomhamilton           Discovered 1987 Aug. 22 by E. F. Helin at Palomar.
Thomas William Hamilton (b. 1939) determined radar and fuel requirements for the Apollo Project. Later he wrote shows (in a dozen languages and also for the deaf) for programmable planetaria, taught astronomy for 32 years and trained students to enter the planetarium field.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091004/MPCPages.arcLast Updated: 2009-10-06

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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
1930-May-14 01:13 00:02 Jupiter 1.90590201134671 1.9059014348019 1.90590258789173 2.47601299181489 2.28949748099515 2426110.550787426 1.96168323907633 57.755115698016 43.3796532903065 64.6021687280289 2066451.68899079 T 33 CATAB v2.0f-lin.ifort 2020-Feb-22 17:25:06 2020-Feb-22 17:25
1988-Sep-04 19:33 < 00:01 Jupiter 1.88141793302131 1.88141753412124 1.88141833192139 3.67938429802385 3.55492055265992 2447409.314497959 0.562712732607578 58.9155258773875 16.5481177722776 85.1856143469484 3234252.50567919 T 33 CATAB v2.0f-lin.ifort 2020-Feb-22 17:25:06 2020-Feb-22 17:25
2037-Jul-17 00:09 < 00:01 Jupiter 1.94673785615286 1.94673740245138 1.94673830985445 2.16070925833589 1.94896580523402 2465256.506552351 0.62203530617651 44.9409477079896 16.6297280415879 68.0456131086973 3580043.52177063 T 33 CATAB v2.0f-lin.ifort 2020-Feb-22 17:25:06 2020-Feb-22 17:25
2047-Jan-25 19:39 < 00:01 Jupiter 1.98459943797867 1.98459893206927 1.9845999438883 4.75353879534996 4.6628891943007 2468736.318960620 0.671366538327681 64.666502828855 17.9234071238822 -76.343383682287 3640040.14612648 T 33 CATAB v2.0f-lin.ifort 2020-Feb-22 17:25:06 2020-Feb-22 17:25
2095-Oct-25 10:36 00:02 Jupiter 1.89914771797521 1.89914730534077 1.89914813060964 3.18954934350717 3.04650984590903 2486540.941394578 1.834552963279 105.098508554224 15.5562285348177 82.7997108859479 2123224.52724376 T 33 CATAB v2.0f-lin.ifort 2020-Feb-22 17:25:06 2020-Feb-22 17:25
2144-Sep-19 19:27 00:03 Jupiter 1.97694155934871 1.9769410019911 1.97694211670611 2.19342267619575 1.98851731436456 2504402.310701602 3.1264280410305 69.6694501665561 11.5332695077427 74.7064584358692 2422176.0174934 T 33 CATAB v2.0f-lin.ifort 2020-Feb-22 17:25:06 2020-Feb-22 17:25
2154-Mar-08 00:41 00:03 Jupiter 1.94986809973856 1.94986729364516 1.94986890584005 4.41042860738193 4.31080974902985 2507858.528547479 2.86138380439666 234.498211267592 17.5769879156473 -83.1492199008874 3308056.96557268 T 33 CATAB v2.0f-lin.ifort 2020-Feb-22 17:25:06 2020-Feb-22 17:25

Alternate Designations
 1987 QD6 = 1971 QV1 = 1971 SB1 = 1990 BN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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