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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06445262096512663 3.6538e-08  
a 3.210492647157263 1.6246e-08 au
q 3.00356798145871 1.2086e-07 au
i 3.801246051893234 4.9199e-06 deg
node 340.2923523785892 6.1717e-05 deg
peri 90.45152931135233 7.2918e-05 deg
M 229.2294542465204 4.0199e-05 deg
tp 2459363.743969792334
(2021-May-29.24396979)
0.00023594 TDB
period 2101.144623524132
5.75
1.5949e-05
4.367e-08
d
yr
n .1713351836753589 1.3005e-09 deg/d
Q 3.417417312855816 1.7293e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2868  
   data-arc span      37706 days (103.23 yr)  
   first obs. used      1916-09-03  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44825  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:12:55  

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 1.93926988751975 1.93926928258005 1.93927049246001 4.02043272197607 3.91028533826843 2433695.522853269 1.68438082226862 82.3889151821898 19.5556699682961 77.8622012989862 3459444.66257829 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
1962-Mar-24 11:06 00:01 Jupiter 1.88399416750924 1.8839936821227 1.88399465289579 3.62443734314455 3.49819505251965 2437747.962299836 1.38143210119408 56.9590472947325 17.2548479415365 81.6212607006752 2984209.03420856 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
1973-May-06 12:28 00:01 Jupiter 1.86847867243642 1.86847827796467 1.86847906690817 3.28185134477541 3.14068531060282 2441809.019621502 1.06910575484286 45.3031851919382 13.853874615471 85.4401619658776 3159606.30759647 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
1984-Jun-25 08:57 < 00:01 Jupiter 1.89496756582859 1.89496719339778 1.89496793825941 3.04822967667779 2.89788434881086 2445876.872612657 0.765311659527349 46.7001559102931 12.0424519485502 82.2698793810331 3670543.575754 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
1995-Aug-20 21:00 < 00:01 Jupiter 1.94468548464911 1.94468509834168 1.94468587095655 2.95727060965412 2.80612442456162 2449950.374908749 0.484563440641708 46.9606593750657 11.4024825958254 79.44089366878 3977098.61287395 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
2118-Jan-07 12:00 00:02 Jupiter 1.99737623125104 1.99737566592932 1.99737679657321 4.23241145657726 4.13100127894908 2494650.000126827 2.34206389209072 95.1831897718946 20.2806064599902 80.8892671795901 3908289.32509192 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
2129-Feb-03 20:18 00:03 Jupiter 1.90308707149746 1.90308653800322 1.90308760499234 3.81216085353375 3.69356386546932 2498695.345692433 2.52822191878861 114.095326644837 18.683110020342 84.095635203409 3398184.06222876 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
2140-Mar-12 07:17 00:03 Jupiter 1.84545732522034 1.84545689612253 1.84545775431814 3.44749210612052 3.31168352482603 2502749.803457976 2.70301097643542 82.7539928236919 16.1004685735107 88.5994020206329 3053354.85003624 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
2151-Apr-28 07:49 00:03 Jupiter 1.83578849421 1.83578808124038 1.83578890717962 3.16683696757729 3.01762615238535 2506813.825558482 2.89870768425521 46.5719068319153 19.0009851591468 88.5569646991967 3043570.22243574 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
2162-Jun-19 22:55 00:03 Jupiter 1.87300551374453 1.87300496367736 1.87300606381191 2.99712692570994 2.84223803284528 2510884.454552414 3.12984468636514 58.5784858997446 19.9394790670553 69.2501931739377 3705184.33924519 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13
2173-Aug-15 02:21 00:03 Jupiter 1.93902516791892 1.93902446037759 1.9390258754607 2.96711043318752 2.8160408784577 2514958.597961147 3.3908726134142 72.6143222059938 17.538776464071 66.5515914857209 4001233.59563266 T 40 CATAB v2.0f-lin.ifort 2019-Dec-03 20:13:11 2019-Dec-03 20:13

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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