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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.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
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 ]
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