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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 ]

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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2555389887847856 3.6701e-08  
a 3.178131693060686 1.41e-08 au
q 2.365995133991079 1.2153e-07 au
i 13.71334072860376 4.8121e-06 deg
node 321.2373408267109 1.68e-05 deg
peri 135.0368816735783 1.9011e-05 deg
M 301.333852528299 9.6967e-06 deg
tp 2459537.741746333820
(2021-Nov-19.24174633)
5.6946e-05 TDB
period 2069.456303377324
5.67
1.3772e-05
3.771e-08
d
yr
n .173958734674651 1.1577e-09 deg/d
Q 3.990268252130292 1.7703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2727  
   data-arc span      39072 days (106.97 yr)  
   first obs. used      1914-01-25  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38536  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:49:45  

Additional Information
 Earth MOID = 1.404 au 
 Jupiter MOID = 1.28813 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 9.81   n/a E2021B10 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

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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 1.63282047496036 1.63281886401784 1.63282208590454 3.71737734431813 3.57510812759432 2442142.302947741 1.42779880940053 208.627188193844 68.2934562991008 79.1961648693639 1825292.77912372 T 35 CATAB v2.0f-lin.ifort 2021-Feb-24 00:49:53 2021-Feb-24 00:49
1985-Apr-23 06:38 < 00:01 Jupiter 1.34475728011964 1.34475673698918 1.34475782325002 3.44006954192905 3.25182073380362 2446178.776310500 0.768539302371403 113.206906451971 25.1608753281101 89.6936121415573 2330360.9928087 T 35 CATAB v2.0f-lin.ifort 2021-Feb-24 00:49:53 2021-Feb-24 00:49
1996-Jun-22 13:03 < 00:01 Jupiter 1.46809372027497 1.46809302943674 1.46809441111521 3.19657839062042 3.01068189056531 2450257.043482790 0.53267430740627 165.619714656569 20.7996152313523 -81.4481230141187 1966765.77189866 T 35 CATAB v2.0f-lin.ifort 2021-Feb-24 00:49:53 2021-Feb-24 00:49
2007-Apr-14 15:11 < 00:01 Jupiter 1.92504135713758 1.92504047472593 1.9250422395501 1.740602667338 1.46618319411735 2454205.132714961 0.678191674290778 446.940011271024 110.991683737223 -74.6620188683035 1299555.77853402 T 35 CATAB v2.0f-lin.ifort 2021-Feb-24 00:49:53 2021-Feb-24 00:49
2104-Oct-25 10:40 00:02 Jupiter 1.61901626478768 1.61901483154223 1.61901769803349 3.64317845787355 3.49662795866204 2489827.944676559 1.51907990770028 135.528391021613 62.7380792357082 76.2566288262966 1899376.75092492 T 35 CATAB v2.0f-lin.ifort 2021-Feb-24 00:49:53 2021-Feb-24 00:49
2115-Nov-17 13:21 00:01 Jupiter 1.30498657694781 1.30498602842674 1.30498712546881 3.52268153875873 3.33333962759967 2493868.056083336 1.3783954963028 91.6946267611336 24.7147027252754 89.5998710012561 2378802.28884499 T 35 CATAB v2.0f-lin.ifort 2021-Feb-24 00:49:53 2021-Feb-24 00:49
2127-Jan-24 13:52 00:02 Jupiter 1.42882941097098 1.42882793855498 1.42883088340087 3.38201097948454 3.20193392360289 2497954.077687009 1.82813506450781 278.324729161747 40.671711163271 -76.3770676352309 2262443.8927358 T 35 CATAB v2.0f-lin.ifort 2021-Feb-24 00:49:53 2021-Feb-24 00:49
2137-Dec-08 05:54 00:04 Jupiter 1.92077674709299 1.92077399837365 1.9207794959618 2.29643337074793 2.09562589862405 2501924.746119948 3.75837549246823 1048.35301291282 92.709954787454 -76.8349157793714 1962149.02969218 T 35 CATAB v2.0f-lin.ifort 2021-Feb-24 00:49:53 2021-Feb-24 00:49

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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