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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .121904591652365 2.9017e-08  
a 3.05619917056239 1.3171e-08 au
q 2.683634458666685 8.6957e-08 au
i 11.05566247527096 3.8983e-06 deg
node 188.4142303834887 1.5964e-05 deg
peri 107.0094819210117 2.2517e-05 deg
M 86.77168474211888 1.568e-05 deg
tp 2458530.122612056828
(2019-Feb-15.62261206)
8.4583e-05 TDB
period 1951.510566641638
5.34
1.2615e-05
3.454e-08
d
yr
n .184472483087563 1.1925e-09 deg/d
Q 3.428763882458095 1.4777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2668  
   data-arc span      25662 days (70.26 yr)  
   first obs. used      1950-08-14  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43623  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:19:49  

Additional Information
 Earth MOID = 1.69486 au 
 Jupiter MOID = 1.87328 au 
 T_jup = 3.196 
[ 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 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 1.90590198311242 1.90590144766693 1.90590251855812 2.47601286441366 2.28949734033948 2426110.550858615 1.88933165220791 54.0225667457923 42.0840843203807 68.1644042936824 2109561.44201246 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 02:19:56 2020-Dec-18 02:19
1988-Sep-04 19:33 < 00:01 Jupiter 1.88141793036817 1.88141757627986 1.88141828445649 3.67938414658753 3.55492039574297 2447409.314519659 0.554178333635984 54.6503470776125 14.9798321418987 86.4799474077709 3385612.72383291 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 02:19:56 2020-Dec-18 02:19
2037-Jul-17 00:09 < 00:01 Jupiter 1.94673779823518 1.9467373839502 1.94673821252016 2.16070934682614 1.94896589669639 2465256.506502794 0.55422991929616 41.6142545066771 14.9996049144227 70.2441652418798 3590249.92024688 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 02:19:56 2020-Dec-18 02:19
2047-Jan-25 19:39 < 00:01 Jupiter 1.98459948953587 1.98459907815092 1.98459990092093 4.75353878906296 4.66288919026932 2468736.318929888 0.615001649886094 57.8483961007738 15.6679368817528 -79.1416031690742 4255663.1469817 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 02:19:56 2020-Dec-18 02:19
2095-Oct-25 10:35 00:02 Jupiter 1.89914769627758 1.89914732526267 1.89914806729238 3.18954967880856 3.04651019528089 2486540.941309275 1.70909806758384 95.7821751262444 14.7489383697433 82.5611248415872 2289608.03469686 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 02:19:56 2020-Dec-18 02:19
2144-Sep-19 19:27 00:03 Jupiter 1.97694148245355 1.97694097772327 1.97694198718373 2.19342235076571 1.98851694702018 2504402.310545025 2.93176731369172 63.1111774956725 11.4193600410953 74.144524034323 2743750.9101866 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 02:19:56 2020-Dec-18 02:19
2154-Mar-08 00:41 00:03 Jupiter 1.94986816195409 1.9498674640537 1.94986885986157 4.41042900843341 4.31081016256458 2507858.528419163 2.69002282088287 218.772843991566 15.5496181417985 -83.7602040726143 3765946.54474292 T 37 CATAB v2.0f-lin.ifort 2020-Dec-18 02:19:56 2020-Dec-18 02:19

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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