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43841 Marcustacitus (1993 HB)
Classification: Main-belt Asteroid          SPK-ID: 2043841
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566470473095082 3.0851e-08  
a 2.422933994664135 7.3161e-09 au
q 2.043388538574166 7.3876e-08 au
i .8689329284669052 3.1076e-06 deg
node 199.9313162272168 0.00022773 deg
peri 241.8676068557042 0.00022795 deg
M 212.9493660018458 1.0479e-05 deg
tp 2459763.197780738020
(2022-Jul-02.69778074)
4.1106e-05 TDB
period 1377.560881976407
3.77
6.2393e-06
1.708e-08
d
yr
n .2613314625220068 1.1836e-09 deg/d
Q 2.802479450754103 8.4621e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1336  
   data-arc span      10501 days (28.75 yr)  
   first obs. used      1991-10-14  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52561  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:23:02  

Additional Information
 Earth MOID = 1.05906 au 
 Jupiter MOID = 2.41875 au 
 T_jup = 3.495 
[ 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 15.36   n/a MPCxxxxx  
diameter diameter 2.598 km 0.690 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.345   0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43841 Marcustacitus           Discovered 1993 Apr. 17 at Santa Lucia Stroncone.
Marcus Claudius Tacitus (200-276), a native of Interamna (Terni), held various civil offices, including that of consul in 273. After becoming emperor of Rome in 275, he initiated domestic reforms and sought to revive the authority of the senate. But he succumbed to hardship and fatigue and was slain by his own soldiers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040504/MPCPages.arcLast Updated: 2004-05-11

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Alternate Designations
 1993 HB = 1999 XQ82 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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