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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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06493631657774372 3.6422e-08  
a 3.208512778915205 1.5754e-08 au
q 3.000163777359831 1.2079e-07 au
i 3.802799445968827 4.92e-06 deg
node 340.2793025966562 6.1362e-05 deg
peri 90.93997212992207 7.2463e-05 deg
M 297.3602500266983 4.0024e-05 deg
tp 2459365.759568468603
(2021-May-31.25956847)
0.00023406 TDB
period 2099.201301166467
5.75
1.5461e-05
4.233e-08
d
yr
n .1714937961404455 1.2631e-09 deg/d
Q 3.416861780470578 1.6777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2917  
   data-arc span      37902 days (103.77 yr)  
   first obs. used      1916-09-03  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44187  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:21:21  

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 1.93927002361122 1.93926941860632 1.93927062861667 4.02043350419877 3.91028615036391 2433695.523089048 1.68424284504683 82.3377960680992 19.4994982238698 77.8073529597119 3464001.96418348 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
1962-Mar-24 11:06 00:01 Jupiter 1.88399425237057 1.88399376684232 1.88399473789882 3.6244378644878 3.49819559846602 2437747.962490300 1.38140149701632 56.80813542263 17.2408518037546 81.5543603071922 2984478.23395096 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
1973-May-06 12:28 00:01 Jupiter 1.86847870166846 1.86847830728061 1.86847909605631 3.2818514839502 3.14068545829132 2441809.019748662 1.06924551147218 45.052256142745 13.8521539466663 85.4451532205908 3159728.55475924 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
1984-Jun-25 08:57 < 00:01 Jupiter 1.89496754722481 1.89496717551301 1.89496791893662 3.04822950393753 2.89788416559434 2445876.872682821 0.765707853863534 46.5562741154263 12.0193501547379 82.2800189796859 3677083.84943664 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
1995-Aug-20 21:00 < 00:01 Jupiter 1.94468543080152 1.94468504591236 1.94468581569068 2.95727025708889 2.80612404870828 2449950.374939970 0.48520767143093 46.9449811580018 11.3477501194647 79.4446863492746 3994350.40139436 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
2118-Jan-07 12:00 00:02 Jupiter 1.99737618179891 1.99737561953477 1.99737674406361 4.23241146829557 4.13100128841347 2494649.999707635 2.33882132002289 94.9878366205684 20.190449414759 80.9377388490457 3923403.21880447 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
2129-Feb-03 20:17 00:03 Jupiter 1.90308702814843 1.90308649629591 1.90308756000159 3.81216071873149 3.69356372359388 2498695.345242517 2.52504463248724 113.86620305062 18.6386642492596 84.1162454188849 3401888.01787694 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
2140-Mar-12 07:16 00:03 Jupiter 1.8454573190067 1.84545689005875 1.8454577479547 3.44749175935399 3.31168316337234 2502749.802971375 2.69991880597364 82.5287332648875 16.0993483318971 88.6038237849236 3053790.2625331 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
2151-Apr-28 07:48 00:03 Jupiter 1.8357885397403 1.83578812726373 1.83578895221676 3.16683648132249 3.01762564587913 2506813.825042287 2.89559836603599 46.3045807890854 18.9721035721638 88.562746266019 3043386.05956104 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
2162-Jun-19 22:54 00:03 Jupiter 1.87300560318914 1.87300505540974 1.87300615096877 2.99712642587745 2.84223751337242 2510884.454001042 3.12656894305052 58.4236182655241 19.857239718472 69.2443492013893 3714081.65242582 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21
2173-Aug-15 02:20 00:03 Jupiter 1.93902528388868 1.93902457980823 1.93902598796956 2.96711012669334 2.81604056479886 2514958.597362739 3.387330819364 72.5370478181722 17.4526098335497 66.6058699204815 4033568.09680183 T 44 CATAB v2.0f-lin.ifort 2020-Jun-23 15:21:33 2020-Jun-23 15:21

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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