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4596 (1981 QB)
Classification: Amor [NEO]          SPK-ID: 2004596
[ 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 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5199542216102424 7.2015e-08  
a 2.238728418140025 6.7e-09 au
q 1.074692126089299 1.5965e-07 au
i 37.07686352400383 1.0765e-05 deg
node 154.2301421880091 9.9185e-06 deg
peri 248.4024332386285 1.4292e-05 deg
M 179.6433300288284 1.1679e-05 deg
tp 2458389.967002417304
(2018-Sep-28.46700242)		 3.83e-05 TDB
period 1223.490341080291
3.35		 5.4924e-06
1.504e-08		 d
yr
n .2942401651345567 1.3209e-09 deg/d
Q 3.402764710190751 1.0184e-08 au
   Orbit Determination Parameters
   # obs. used (total)      448  
   data-arc span      14064 days (38.51 yr)  
   first obs. used      1981-08-28  
   last obs. used      2020-02-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Mar-01 05:07:33  

Additional Information
 Earth MOID = .296609 au 
 Jupiter MOID = 2.87971 au 
 T_jup = 3.218 
[ 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 16.33   n/a E2021B10  
rotation period rot_per 2.49101 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

4596 (1981 QB)          Discovered 1981-Aug-28 by Kowal, C. T. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1904-Sep-02 05:33 < 00:01 Earth 0.403366804334359 0.403361197179225 0.40337241158859 24.580966291901 24.5806975622271 2416725.731099469 0.349946109669692 422.498523573283 26.9157969858791 48.6956236792108 1642242.46196167 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
1914-Sep-09 01:41 < 00:01 Earth 0.306248070773503 0.306246630725916 0.306249510972924 20.4417394329857 20.4413138094174 2420384.570400543 0.171497175945319 366.676725225044 23.3465944055879 -79.3042826030402 1954015.42998624 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
1924-Sep-10 13:02 < 00:01 Earth 0.477552779711697 0.477547468288235 0.477558091185025 18.37497688086 18.3746732347187 2424039.042778801 0.0497508117199557 359.927871899986 14.6713830542213 -42.6628019084684 4323732.95321933 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
1971-Sep-06 08:25 < 00:01 Earth 0.317066373483468 0.317065353574647 0.317067393410961 22.1700453184574 22.1696662660116 2441200.850378486 0.115192703172226 152.130944353676 27.0929767556846 73.2905991052459 1670279.9977949 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
1981-Sep-10 05:54 < 00:01 Earth 0.36140396896263 0.361402486400033 0.361405451533588 19.1214009785675 19.121015407792 2444857.745487723 0.0486131118906945 116.46525961322 19.8889087765006 -51.6476335471546 2286971.94104297 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
2001-Oct-13 18:34 < 00:01 Mars 0.0431980567319794 0.0431968175332515 0.0431992959451286 20.57011844336 20.5697962559356 2452196.273347393 0.103791104356311 75.4959899571292 25.9602873992444 37.7197663306912 166550.078322028 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
2028-Aug-31 23:23 < 00:01 Earth 0.406771629646622 0.406769702332258 0.406773556965773 24.9000566991736 24.8997936338167 2462015.474283076 0.0931104699608288 120.331136721546 26.273213492214 38.0700615178467 1446665.83841538 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
2038-Sep-08 15:33 < 00:01 Earth 0.304009919634875 0.304009328667641 0.304010510613065 20.2662777258513 20.2658452565884 2465675.147591933 0.0737743886699442 148.455021542177 22.9916270150607 -82.7788322022059 2000767.18038393 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
2048-Sep-10 03:33 < 00:01 Earth 0.478547634549712 0.478544684958289 0.478550584156422 18.2628220056023 18.2625171298244 2469329.647977597 0.0421500563483832 200.063290962234 14.3278414776326 -42.8126069510708 4586657.73307772 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
2095-Sep-05 21:13 < 00:01 Earth 0.306979371486224 0.306976935338153 0.306981807772393 22.0313979403825 22.0310039687135 2486491.384075335 0.220679545477376 353.828242657348 25.8767268163583 70.3449170659309 1670342.67910635 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
2105-Sep-10 21:01 < 00:01 Earth 0.37532481375262 0.375319903720089 0.375329723879685 18.847647424646 18.8472707622457 2490148.375383905 0.0810757063061414 385.579756115125 18.2041638353147 -50.6570007920963 2620827.10441967 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
2152-Sep-02 03:43 < 00:01 Earth 0.374283610712743 0.374276269301025 0.374290952298857 24.3006491027388 24.3003561508586 2507306.655158155 0.423441124147019 545.190308503905 27.066259308712 47.8962943416195 1509959.43199203 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
2162-Sep-09 08:16 < 00:01 Earth 0.304369711818373 0.304366622041323 0.304372801956002 19.984997990164 19.984559952379 2510965.844393437 0.231934926215274 550.695815335435 23.6942568367036 -73.9346647013075 1910340.8394188 T 108 CATAB v2.0f-lin.ifort 2020-Mar-01 05:07:39 2020-Mar-01 05:07
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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