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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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06493631501424434 3.6269e-08  
a 3.208512777669752 1.5539e-08 au
q 3.000163781211761 1.2051e-07 au
i 3.802799626666727 4.9015e-06 deg
node 340.2792993266389 6.0878e-05 deg
peri 90.93997271312467 7.1842e-05 deg
M 297.360253262044 3.9437e-05 deg
tp 2459365.759549390256
(2021-May-31.25954939)
0.00023058 TDB
period 2099.201299944192
5.75
1.525e-05
4.175e-08
d
yr
n .171493796240299 1.2458e-09 deg/d
Q 3.416861774127743 1.6548e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3005  
   data-arc span      37956 days (103.92 yr)  
   first obs. used      1916-09-03  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4356  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:23:02  

Additional Information
 Earth MOID = 2.01786 au 
 Jupiter MOID = 1.77375 au 
 T_jup = 3.185 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455879.5 (2011-Nov-14.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0617079680284595 3.5857e-08  
q 3.014886427043918 1.188e-07 au
tp 2455126.358997007116
(2009-Oct-21.85899701)
0.00023966 TDB
node 340.802158546942 6.0469e-05 deg
peri 84.95546509715716 7.2997e-05 deg
i 3.816557764604829 4.9128e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3005  
   data-arc span      37956 days (103.92 yr)  
   first obs. used      1916-09-03  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4356  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:23:02  

Additional Information
 Jupiter MOID = 1.77375 au 
 T_jup = 3.185 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.285704264306098E-15 -4.227843435932938E-15 -8.115913951796854E-13 -3.974043972903876E-15 -1.431243181227508E-13 2.760229929620911E-16
q -4.227843435932938E-15 1.411234873842045E-14 3.204946567047964E-12 1.686339623965471E-14 5.667818368388284E-13 -1.132878746909113E-16
tp -8.115913951796854E-13 3.204946567047964E-12 5.743773956852509E-8 1.247195645165783E-11 9.824025013289628E-9 -4.146263418861778E-12
node -3.974043972903876E-15 1.686339623965471E-14 1.247195645165783E-11 3.656484616580545E-9 -3.645057453849402E-9 2.043536449856651E-11
peri -1.431243181227508E-13 5.667818368388284E-13 9.824025013289628E-9 -3.645057453849402E-9 5.328594034534434E-9 -2.098386488331349E-11
i 2.760229929620911E-16 -1.132878746909113E-16 -4.146263418861778E-12 2.043536449856651E-11 -2.098386488331349E-11 2.413548908715017E-11

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 1.9392700378419 1.93926943953662 1.93927063614761 4.02043361677095 3.91028626692676 2433695.523125771 1.65769365175601 81.3173104710806 19.4046414696691 77.880591509637 3486971.73576939 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
1962-Mar-24 11:06 00:01 Jupiter 1.88399426460264 1.8839937860338 1.88399474317148 3.62443792983722 3.49819566700819 2437747.962507058 1.35943261501558 56.234288988078 17.0837095347616 81.7489118978456 3027630.37305007 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
1973-May-06 12:28 00:01 Jupiter 1.86847871161549 1.86847832289451 1.86847910033647 3.28185158537228 3.14068556504048 2441809.019770715 1.05253237162059 44.9101068160491 13.6932842413492 85.4749393954091 3218766.27259185 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
1984-Jun-25 08:57 < 00:01 Jupiter 1.89496755558791 1.89496718735502 1.8949679238208 3.04822958398851 2.89788425047919 2445876.872701630 0.754513203662783 46.5214721598843 11.9122300903742 82.1998537378533 3736776.94433756 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
1995-Aug-20 21:00 < 00:01 Jupiter 1.94468543796194 1.94468505488899 1.944685821035 2.9572702972852 2.8061240916412 2449950.374957650 0.479383674583741 46.7531048878283 11.2765077851045 79.360751778148 4025288.99677893 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
2118-Jan-07 12:00 00:02 Jupiter 1.99737617532036 1.99737561629659 1.99737673434458 4.23241146114629 4.13100128075573 2494649.999674108 2.3095460165 93.622723785213 20.1183138857382 80.9039952248162 3928621.40020492 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
2129-Feb-03 20:17 00:03 Jupiter 1.90308702643603 1.90308649505246 1.90308755782024 3.81216068685031 3.6935636905806 2498695.345193504 2.49310616214763 112.235128426184 18.5836783520365 84.0012522790712 3415791.11991677 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
2140-Mar-12 07:16 00:03 Jupiter 1.84545732459891 1.84545689699019 1.84545775220763 3.44749178949304 3.31168319516733 2502749.802929362 2.66493168224705 81.4031314353346 15.9672065928393 88.39028908895 3073243.92953921 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
2151-Apr-28 07:48 00:03 Jupiter 1.83578855347992 1.8357881508825 1.83578895607733 3.16683653918473 3.0176257077468 2506813.825003106 2.85671092797081 46.0583622750667 18.4436658260622 88.3991201949227 3053779.73752778 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
2162-Jun-19 22:54 00:03 Jupiter 1.87300562379925 1.8730050919811 1.87300615561761 2.99712645551061 2.84223754637125 2510884.453940352 3.08309569672992 58.0657598701574 19.414967376439 69.7547935948532 3758516.41133994 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23
2173-Aug-15 02:20 00:03 Jupiter 1.93902530852275 1.93902462094302 1.93902599610293 2.96711017614417 2.81604061887326 2514958.597299496 3.33914160006299 71.8296165362954 17.1507088829765 66.9150100000074 4100166.81497342 T 45 CATAB v2.0f-lin.ifort 2020-Aug-24 22:23:15 2020-Aug-24 22:23

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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