+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   778 Theobalda (A914 BG) Classification: Main-belt Asteroid          SPK-ID: 2000778 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2553330486251785 3.6911e-08   a 3.178937087795747 1.4251e-08 au q 2.367249389781212 1.2207e-07 au i 13.71207843787619 4.8715e-06 deg node 321.2347896383453 1.6893e-05 deg peri 134.9743237782087 1.9088e-05 deg M 266.5919754339283 9.5978e-06 deg tp 2459537.659193853988 (2021-Nov-19.15919385) 5.7083e-05 TDB period 2070.243008411456 5.67 1.3921e-05 3.811e-08 d yr n .1738926292890785 1.1693e-09 deg/d Q 3.990624785810281 1.789e-08 au   Orbit Determination Parameters    # obs. used (total)      2593      data-arc span      39010 days (106.80 yr)      first obs. used      1914-01-25      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .39417      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:56:02   Additional Information  Earth MOID = 1.40546 au   Jupiter MOID = 1.28835 au   T_jup = 3.105  [ 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 9.7   n/a MPO492758 IRAS observations used: 19 diameter diameter 55.317 km 0.797 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 11.659 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Binzel, R.P.; Mulholland, J.D. (1983) Icarus 56, 519-533.] geometric albedo albedo 0.079   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.617   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=6.61, mean=10.22, max.=21.13) deg. U-B UB 0.256   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=6.61, mean=10.22, max.=21.13) deg. Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo 778 Theobalda (A914 BG)          Discovered 1914-Jan-25 by Kaiser, F. at Heidelberg Reference: DISCOVERY.DB Last 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 1974-Apr-04 19:16 00:01 Jupiter 1.63282045974356 1.63281884642769 1.6328220730612 3.71737733989681 3.57510812164482 2442142.302939816 1.43132784607179 209.342989500673 68.3449212914111 79.1974408803817 1820021.96309584 T 34 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:10 2020-Dec-18 01:56 1985-Apr-23 06:38 < 00:01 Jupiter 1.34475727410317 1.34475673007538 1.34475781813089 3.44006951579843 3.25182070529369 2446178.776302113 0.770392377852303 114.059209665016 25.262285884057 89.7331887852761 2307663.26086913 T 34 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:10 2020-Dec-18 01:56 1996-Jun-22 13:03 < 00:01 Jupiter 1.46809371530763 1.46809302407334 1.46809440654385 3.1965784766466 3.01068198125482 2450257.043490081 0.534540617486997 167.764444850181 20.9439002640967 -81.5622766956841 1950711.83671359 T 34 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:10 2020-Dec-18 01:56 2007-Apr-14 15:11 < 00:01 Jupiter 1.92504134980009 1.92504046496367 1.92504223463738 1.74060275785824 1.46618330043602 2454205.132724840 0.685205720481616 452.245258445961 111.796997014798 -74.5499373723436 1278449.83705192 T 34 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:10 2020-Dec-18 01:56 2104-Oct-25 10:40 00:02 Jupiter 1.61901628271969 1.61901484373484 1.61901772170491 3.64317845324888 3.49662795550073 2489827.944689855 1.52357425356727 135.696424937179 63.1726627647831 76.3976743254476 1889017.82205246 T 34 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:10 2020-Dec-18 01:56 2115-Nov-17 13:21 00:01 Jupiter 1.3049865754023 1.3049860268638 1.30498712394077 3.52268152063219 3.33333960821288 2493868.056090862 1.38239053316719 92.3928966443934 24.747015674007 89.6594802291432 2353959.57713172 T 34 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:10 2020-Dec-18 01:56 2127-Jan-24 13:52 00:02 Jupiter 1.42882938298334 1.42882790135545 1.42883086462512 3.38201091602848 3.20193385295156 2497954.077694261 1.83544690017618 279.091718213192 41.2306672783599 -76.3586151979595 2225461.10773895 T 34 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:10 2020-Dec-18 01:56 2137-Dec-08 05:54 00:04 Jupiter 1.9207767025316 1.92077394046453 1.92077946475076 2.29643376539639 2.09562632620672 2501924.746176668 3.77555817624183 1057.59154693434 92.9162268130485 -76.8769535661252 1929759.38706842 T 34 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:10 2020-Dec-18 01:56 Alternate Designations  A914 BG = 1940 PG = 1948 CA = A923 RQ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 10:16 UT (server date/time)   Site Manager:   Ryan S. 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