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 ]  
334 Chicago (A892 QB)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000334
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 159 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02376148252789962 3.7659e-08  
a 3.888518953293611 2.0856e-08 au
q 3.796121978125518 1.5008e-07 au
i 4.643535573991198 4.1909e-06 deg
node 130.16872767 5.1773e-05 deg
peri 149.8271079278584 0.00010086 deg
M 288.4435868049512 8.787e-05 deg
tp 2459557.199484908618
(2021-Dec-08.69948491)
0.00068448 TDB
period 2800.752659594872
7.67
2.2532e-05
6.169e-08
d
yr
n .1285368769593792 1.0341e-09 deg/d
Q 3.980915928461704 2.1351e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3278  
   data-arc span      46770 days (128.05 yr)  
   first obs. used      1892-08-24  
   last obs. used      2020-09-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43522  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:30:45  

Additional Information
 Earth MOID = 2.78072 au 
 Jupiter MOID = 1.07776 au 
 T_jup = 3.061 
[ 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 7.7   n/a MPO347513  
diameter diameter 198.770 km 5.597 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 7.361 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1990) Icarus 86, 402-447.]
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Jutzeler, E.C.; Hausel, E.; Leake, M.; Burke, A. (2007) J. SE Assoc. for Research in Astron. 1, 2-6.]
[Strabla, L.; Quadri, U.; Girelli, R. (2011) Minor Planet Bull. 38, 169-172.]
[Slyusarev, I.G.; Shevchenko, V.G.; Belskaya, I.N.; Krugly, Yu.N.; Chiorny, V.G. (2012) ACM 2012, #6398.]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.041   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
B-V BV 0.736   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=5.04, mean=9.38, max.=14.21) deg.
U-B UB 0.358   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=5.04, mean=9.48, max.=14.21) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

334 Chicago (A892 QB)          Discovered 1892-Aug-23 by Wolf, M. at Heidelberg
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
1916-Nov-29 11:30 00:03 Jupiter 1.10385264161508 1.1038521534715 1.10385312975797 1.59794605086588 1.00933921940069 2421196.979091529 2.97139165460008 232.302585624368 96.67415401008 44.4711775487279 2002572.00519546 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
1939-Jan-13 09:58 00:02 Jupiter 1.22626027985997 1.22625966304701 1.22626089667348 2.24053543225595 1.90749217003143 2429276.915009321 2.13893991290648 102.728309083289 15.2773925855163 89.1277421216108 2374277.04401611 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
1960-Oct-22 10:25 00:02 Jupiter 1.53885940361391 1.53885894972294 1.53885985750488 2.97695770513731 2.78593478021776 2437229.933822677 1.54095466922929 48.736341773101 16.6622814923179 -81.5009818178286 3653420.49240628 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
1982-Jun-05 02:36 < 00:01 Jupiter 1.67892381208568 1.67892332902718 1.67892429514428 3.05195609916801 2.88191421383137 2445125.608537037 0.994521488108714 54.9817110121724 15.461465767514 -79.6197897110083 3511934.39272503 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2004-Jan-14 02:11 < 00:01 Jupiter 1.46898167556039 1.46898121880966 1.46898213231104 2.49089944269735 2.24752521123086 2453018.590717213 0.434437594287679 51.3955424917638 11.600100293703 -81.9100457930718 3003155.15134218 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2025-Nov-09 09:13 < 00:01 Jupiter 1.18102209115617 1.18102158976459 1.18102259254721 1.77015042747603 1.30347366320568 2460988.883878328 0.647913743414268 77.2953179251953 63.0635462277099 -61.7432033371739 1934561.08329636 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2047-Dec-29 16:36 00:02 Jupiter 1.12457941200696 1.12457889948739 1.12457992452557 1.56009196960155 0.963071117922109 2469074.191993866 1.79209137939379 173.964057005941 120.004733188492 36.0485947477372 2014058.30313504 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2069-Dec-20 20:23 00:03 Jupiter 1.29849352972791 1.29849262943585 1.29849443002351 2.44501446797018 2.1618215369996 2477101.349081718 3.24898952713122 152.518717235736 13.9912152257844 -87.5809759612823 2663640.79643435 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2091-Sep-17 10:26 00:04 Jupiter 1.57032204317361 1.57032111992582 1.57032296642301 3.27243498963656 3.1032309729462 2485041.934593563 4.16057090380043 113.516917146277 22.6892075443985 -71.5811832863405 3207254.17995953 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2113-May-07 05:24 00:05 Jupiter 1.65171479186246 1.65171419884909 1.65171538487668 2.97468929763236 2.79698915998991 2492943.725312621 4.94736722124061 99.0470609921976 15.6332339825661 -84.9613173262415 2984343.95862631 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2134-Dec-11 13:42 00:05 Jupiter 1.41108250058174 1.41108083487369 1.41108416629997 2.16068856660767 1.86226915020909 2500832.071050974 5.44577156313716 234.491365346793 7.9316509272162 -81.4747925764496 2290872.113124 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2156-Oct-29 08:10 00:05 Jupiter 1.14119773922437 1.14119685494322 1.14119862351563 1.67285074206427 1.14629176963156 2508824.840255304 5.146586060815 278.418812035611 113.645435475509 77.2393063127111 1729090.27450664 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2178-Dec-24 00:38 00:07 Jupiter 1.15768579581823 1.15768469808643 1.15768689355168 1.68173964264714 1.16830872763091 2516915.526466008 6.65074739326198 202.901367416246 83.0863119895808 58.6631972266773 1639799.74985384 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30
2200-Oct-28 06:42 00:09 Jupiter 1.38776680989758 1.38776495230825 1.38776866752005 2.70800878497359 2.47236990722041 2524893.778892066 8.7012487327534 383.980214693258 16.3062498756377 -84.761760362706 2914977.05678955 T 159 CATAB v2.0f-lin.ifort 2020-Nov-13 04:30:54 2020-Nov-13 04:30

Alternate Designations
 A892 QB = A903 HA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-17 04:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin