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830 Petropolitana (A917 YD)
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06493631329158965 3.5798e-08  
a 3.208512776057954 1.4448e-08 au
q 3.000163785231786 1.1977e-07 au
i 3.80280039236222 4.6898e-06 deg
node 340.2792890044897 5.8976e-05 deg
peri 90.93997921399747 6.9049e-05 deg
M 297.3602577869424 3.6127e-05 deg
tp 2459365.759522729822
(2021-May-31.25952273)
0.0002109 TDB
period 2099.20129836239
5.75
1.418e-05
3.882e-08
d
yr
n .171493796369524 1.1584e-09 deg/d
Q 3.416861766884121 1.5387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3264  
   data-arc span      38039 days (104.15 yr)  
   first obs. used      1916-09-03  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41982  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:25:21  

Additional Information
 Earth MOID = 2.01786 au 
 Jupiter MOID = 1.77375 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-August); 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 (A917 YD)          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 1.93927005992097 1.93926950146753 1.93927061837474 4.02043378647786 3.91028644268579 2433695.523172782 1.51365109718479 75.7850597483309 18.8665290001558 78.5107163660714 3649583.37308456 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
1962-Mar-24 11:06 00:01 Jupiter 1.88399428133888 1.8839938419454 1.88399472073237 3.62443812569475 3.49819587107549 2437747.962545121 1.24061084534645 53.4323352724002 16.182741955753 83.0796275509223 3305939.46149588 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
1973-May-06 12:29 < 00:01 Jupiter 1.8684787250309 1.86847836512659 1.86847908493521 3.28185176157259 3.14068575019688 2441809.019798206 0.962398897184872 44.6233491970614 12.8955825229738 85.612759398418 3582023.75242388 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
1984-Jun-25 08:57 < 00:01 Jupiter 1.89496756886056 1.8949672161704 1.89496792155072 3.04822973229724 2.8978844075627 2445876.872730958 0.694144963860127 46.0521249134198 11.4549113254427 81.7531642723072 4055303.46597723 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
1995-Aug-20 21:00 < 00:01 Jupiter 1.94468545217361 1.94468507709334 1.94468582725389 2.95727036175721 2.80612416072018 2449950.374964808 0.447778077526384 44.7002772585621 11.0218209691828 78.8755400626091 4143824.79939001 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
2118-Jan-07 11:59 00:02 Jupiter 1.99737617369975 1.99737562875284 1.997376718647 4.23241141507592 4.1310012334711 2494649.999617771 2.15344609539917 86.4026067159099 19.6960206920368 80.5032355862128 3978207.01798323 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
2129-Feb-03 20:17 00:02 Jupiter 1.90308702804797 1.90308649844502 1.90308755765158 3.81216075092838 3.69356375681821 2498695.345146299 2.32222752226459 103.660899760616 18.2124043336955 83.2313514458049 3535112.26472447 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
2140-Mar-12 07:16 00:02 Jupiter 1.84545733274135 1.84545691223461 1.8454577532481 3.44749188382943 3.31168329398385 2502749.802874374 2.47714282271086 75.677587246067 15.1482019219681 87.1212557328703 3220914.5066979 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
2151-Apr-28 07:48 00:03 Jupiter 1.8357885715487 1.8357882199591 1.8357889231382 3.16683663242656 3.01762580710403 2506813.824936836 2.64763771594107 45.3196369040933 15.5856421194828 87.5815048601735 3119123.89096775 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
2162-Jun-19 22:54 00:03 Jupiter 1.87300565207304 1.87300520256064 1.87300610158565 2.99712654900557 2.84223764736308 2510884.453871294 2.84944932407213 56.2096005305926 16.9592917968655 72.2813477952959 3997157.14141948 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25
2173-Aug-15 02:20 00:03 Jupiter 1.93902534454926 1.93902473977501 1.93902594932396 2.96711025317889 2.8160407029227 2514958.597227385 3.08056865282899 67.5816143909539 15.4684239002487 68.282330046934 4432087.69649782 T 46 CATAB v2.0f-lin.ifort 2020-Nov-13 04:25:29 2020-Nov-13 04:25

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