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JPL Small-Body Database Browser
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830 Petropolitana (A916 QE)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000830
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06445262056425899 3.6478e-08  
a 3.210492647019346 1.6226e-08 au
q 3.003567982616664 1.2072e-07 au
i 3.801246051892143 4.9191e-06 deg
node 340.2923523382854 6.1584e-05 deg
peri 90.45152948723636 7.2805e-05 deg
M 229.2294541813974 4.0198e-05 deg
tp 2459363.743970123243
(2021-May-29.24397012)
0.00023594 TDB
period 2101.14462338874
5.75
1.5929e-05
4.361e-08
d
yr
n .1713351836863993 1.2989e-09 deg/d
Q 3.417417311422027 1.7272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2883  
   data-arc span      37714 days (103.26 yr)  
   first obs. used      1916-09-03  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44716  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:49:10  

Additional Information
 Earth MOID = 2.02094 au 
 Jupiter MOID = 1.77522 au 
 T_jup = 3.185 
[ 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 9.10   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
diameter diameter 41.328 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 39.0 h n/a LCDB (Rev. 2019-January); 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:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.215   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.899   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.04, mean=7.32, max.=9.59) deg.
U-B UB 0.500   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=9.59 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

830 Petropolitana (A916 QE)          Discovered 1916-Aug-25 by Neujmin, G. at Simeis
Independent discovery Sept. 3 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ 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
1951-Feb-18 00:33 00:02 Jupiter 1.93926988647931 1.93926928161666 1.93927049134251 4.02043275296497 3.91028537007032 2433695.522862144 1.68390059029832 82.3515730293652 19.5323342189536 77.8416941977993 3461512.48203155 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
1962-Mar-24 11:06 00:01 Jupiter 1.88399416706816 1.88399368169393 1.8839946524424 3.62443730499372 3.49819501296195 2437747.962291017 1.38102996277167 56.8909253956075 17.2484809777522 81.5977857150227 2984667.63870982 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
1973-May-06 12:28 00:01 Jupiter 1.86847867262198 1.86847827819622 1.86847906704774 3.28185131616659 3.14068528072244 2441809.019612642 1.0688069477213 45.2042946793439 13.8533375459753 85.4427443143398 3160058.46526835 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
1984-Jun-25 08:57 < 00:01 Jupiter 1.89496756661619 1.89496719444778 1.89496793878461 3.04822967864163 2.89788435094069 2445876.872611599 0.76514676107501 46.6439472465287 12.0342549607167 82.2732031091632 3673319.79337394 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
1995-Aug-20 21:00 < 00:01 Jupiter 1.94468548594428 1.9446851001806 1.94468587170806 2.95727061615791 2.8061244315191 2449950.374916102 0.484526576459113 46.9519043522882 11.3815316989986 79.4414823743452 3983867.35326379 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2118-Jan-07 12:00 00:02 Jupiter 1.99737623018031 1.99737566606368 1.99737679429751 4.23241145375798 4.13100127600556 2494650.000128099 2.34079286056747 95.1057163616984 20.2435981559498 80.907032023421 3914485.92451109 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2129-Feb-03 20:18 00:03 Jupiter 1.90308707108729 1.90308653825327 1.90308760392207 3.81216085458767 3.6935638665311 2498695.345694152 2.52693110467134 114.002868006901 18.6643102697363 84.103069615486 3399877.47732473 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2140-Mar-12 07:17 00:03 Jupiter 1.84545732531692 1.84545689629916 1.84545775433469 3.44749210435563 3.31168352299602 2502749.803458435 2.70169892785253 82.6616418983413 16.0989554749591 88.6008303913873 3053720.25420123 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2151-Apr-28 07:49 00:03 Jupiter 1.83578849469107 1.83578808193548 1.83578890744656 3.16683698364533 3.01762616928797 2506813.825564682 2.89732503414433 46.4656375145505 18.9882207654208 88.5596087843759 3043617.44600927 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2162-Jun-19 22:55 00:03 Jupiter 1.87300551431226 1.87300496517179 1.87300606345294 2.99712692877571 2.84223803612636 2510884.454551961 3.12832393497015 58.5169204902055 19.9062431709784 69.2497709078402 3708777.86048683 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49
2173-Aug-15 02:21 00:03 Jupiter 1.93902516847702 1.93902446234309 1.93902587461139 2.96711044217199 2.8160408879688 2514958.597961454 3.38916679513621 72.5800755658233 17.50383820786 66.5736541610318 4013938.33365524 T 41 CATAB v2.0f-lin.ifort 2019-Dec-13 20:49:23 2019-Dec-13 20:49

Alternate Designations
 A916 QE = 1933 RK = 1949 KW = A917 YD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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