Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06511318846030706 1.4848e-08  
a 3.208944406127975 1.2807e-08 au
q 2.999999804253116 4.9948e-08 au
i 3.802735375867458 1.1031e-06 deg
node 340.2783879550154 7.8238e-06 deg
peri 90.93398809694386 2.397e-05 deg
M 331.6769317117431 2.2138e-05 deg
tp 2459365.688388070334
(2021-May-31.18838807)
0.00012887 TDB
period 2099.624909988175
5.75
1.257e-05
3.441e-08
d
yr
n .1714591964914474 1.0265e-09 deg/d
Q 3.417889008002834 1.3641e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3522  
   data-arc span      38174 days (104.51 yr)  
   first obs. used      1916-09-03  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41162  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:30:30  

Additional Information
 Earth MOID = 2.01716 au 
 Jupiter MOID = 1.77274 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 9.15   n/a E2021B10 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. 2020-October); 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 00:01 Jupiter 1.93927007571089 1.93926974480168 1.9392704066202 4.02043375065845 3.91028640738393 2433695.523128467 1.19860035403083 49.9988040011002 11.7957504542617 80.74418811715 6052676.54316234 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
1962-Mar-24 11:06 < 00:01 Jupiter 1.8839944040891 1.88399410958535 1.88399469859286 3.62443845349459 3.49819621978852 2437747.962507206 0.997156250247173 23.9209807467476 11.3613265202192 83.0834333835931 5553975.9041527 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
1973-May-06 12:28 < 00:01 Jupiter 1.86847890465002 1.86847865837277 1.86847915092726 3.28185234486849 3.14068637438328 2441809.019755259 0.789370426419691 9.44929821505452 7.44848525580735 -28.8365141275854 5595702.69344866 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
1984-Jun-25 08:57 < 00:01 Jupiter 1.89496776270117 1.89496757027969 1.89496795512265 3.04823053460489 2.89788526812512 2445876.872687776 0.583491723084125 13.2595426622665 6.29654091750995 77.5358196322739 7235042.81856095 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
1995-Aug-20 21:00 < 00:01 Jupiter 1.94468561073851 1.94468545254008 1.94468576893682 2.95727125167469 2.80612511208471 2449950.374951391 0.390066872884097 12.8421990456572 4.25371999150071 71.7600426303222 9817072.31129652 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
2118-Jan-07 12:00 00:02 Jupiter 1.99737612599522 1.99737561004051 1.99737664195049 4.23241127681224 4.13100108992857 2494649.999723515 1.69073659638392 65.7528146345686 9.64552473164361 71.515251967668 7323684.0972636 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
2129-Feb-03 20:17 00:02 Jupiter 1.90308709244945 1.90308659997554 1.90308758492412 3.81216098810794 3.69356400635691 2498695.345297977 1.80988564631205 78.8030062515018 11.0356262804651 77.4225343471583 6179910.68602643 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
2140-Mar-12 07:16 00:02 Jupiter 1.84545748672824 1.84545713715785 1.84545783629885 3.44749247016681 3.31168391669629 2502749.803089449 1.91568455566419 51.8191679125815 10.2306829978169 82.0969886514254 6046202.42426631 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
2151-Apr-28 07:48 00:02 Jupiter 1.83578874927988 1.83578852663759 1.83578897192216 3.16683743769011 3.01762666783258 2506813.825191770 2.03880143419643 12.2384430218991 6.88205463971038 -44.4185395430333 5324428.86191957 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
2162-Jun-19 22:54 00:02 Jupiter 1.87300579763175 1.87300545907692 1.87300613618669 2.99712746411306 2.84223862558368 2510884.454171405 2.19692738343355 28.589293937242 6.90659491177949 52.3379277801177 8228015.05720846 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31
2173-Aug-15 02:20 00:02 Jupiter 1.93902542384658 1.93902489643973 1.93902595125366 2.96711108482867 2.81604158638793 2514958.597567572 2.38713864040616 42.6340932243414 4.63998353391936 55.548266794183 10742234.3009098 T 52 CATAB v2.0f-lin.ifort 2021-Apr-12 11:31:26 2021-Apr-12 11:31

Alternate Designations
 A917 YD = 1933 RK = 1949 KW = A916 QE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-22 18:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin