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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06445262085473231 3.6711e-08  
a 3.210492647152376 1.6303e-08 au
q 3.003567981808557 1.2129e-07 au
i 3.801246099092476 4.9236e-06 deg
node 340.2923543608725 6.211e-05 deg
peri 90.451527410756 7.3259e-05 deg
M 229.2294541843824 4.0207e-05 deg
tp 2459363.743970153260
(2021-May-29.24397015)
0.00023598 TDB
period 2101.144623519335
5.75
1.6005e-05
4.382e-08
d
yr
n .1713351836757501 1.3051e-09 deg/d
Q 3.417417312496193 1.7354e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2835  
   data-arc span      37679 days (103.16 yr)  
   first obs. used      1916-09-03  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44965  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:58:10  

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 1.93926988672231 1.93926928143614 1.93927049200892 4.02043272274903 3.91028533901724 2433695.522853463 1.68553582358117 82.489329361283 19.6311160793089 77.920766301687 3452454.16908839 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
1962-Mar-24 11:06 00:01 Jupiter 1.88399416746217 1.8839936819787 1.88399465294564 3.6244373205656 3.49819502912266 2437747.962294704 1.38239711066099 57.1561852401483 17.2774777256522 81.6908503011539 2982883.66895392 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
1973-May-06 12:28 00:01 Jupiter 1.86847867323587 1.86847827866439 1.86847906780724 3.2818512991343 3.14068526297201 2441809.019609102 1.06981710651225 45.6075318929238 13.8544135228587 85.4328573957965 3158858.58179085 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
1984-Jun-25 08:57 < 00:01 Jupiter 1.89496756711409 1.89496719398183 1.89496794024635 3.0482296741338 2.89788434623951 2445876.872613742 0.765688060670449 46.8873641353727 12.0634349552141 82.2574800280838 3663720.96764218 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
1995-Aug-20 21:00 < 00:01 Jupiter 1.94468548587469 1.94468509797567 1.94468587377371 2.95727060748544 2.80612442237394 2449950.374917727 0.484632116666637 46.9973911745838 11.4626771826001 79.4351081072903 3958087.34098891 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
2118-Jan-07 12:00 00:02 Jupiter 1.99737622999648 1.99737566095504 1.99737679903849 4.23241148895328 4.13100131205541 2494650.000134490 2.34559145675334 95.3983268131348 20.3967668420566 80.8343717373632 3888139.01300861 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
2129-Feb-03 20:18 00:03 Jupiter 1.90308707056636 1.90308653492046 1.9030876062129 3.81216089080072 3.69356390387394 2498695.345701274 2.53177917264932 114.352613666508 18.7463946665466 84.0710051228383 3392033.69634297 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
2140-Mar-12 07:17 00:03 Jupiter 1.84545732513222 1.84545689569233 1.84545775457211 3.44749211372376 3.31168353273445 2502749.803460171 2.70659616833539 83.0155861508049 16.1080452197211 88.5915825143626 3052095.18247714 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
2151-Apr-28 07:49 00:03 Jupiter 1.83578849507772 1.83578808161816 1.83578890853728 3.16683698881858 3.01762617474922 2506813.825567584 2.90245659665046 46.8932955958419 19.0313840474704 88.5467760735401 3043530.09262589 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
2162-Jun-19 22:55 00:03 Jupiter 1.87300551513642 1.87300496257364 1.87300606769941 2.99712692185405 2.84223802889751 2510884.454552376 3.13394953447766 58.7726071705956 20.0331679098149 69.2662282600545 3695741.58114799 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58
2173-Aug-15 02:21 00:03 Jupiter 1.93902516923349 1.93902445772861 1.93902588073892 2.96711043270866 2.81604087805831 2514958.597959925 3.39547278612729 72.7182222002776 17.6392187131097 66.4934201800416 3965179.52366377 T 39 CATAB v2.0f-lin.ifort 2019-Nov-07 01:58:26 2019-Nov-07 01:58

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