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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.

JPL Small-Body Database Browser
Search: [ help ]  
2144 Marietta (1975 BC1)
Classification: Main-belt Asteroid          SPK-ID: 2002144
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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.

[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06170736791661459 3.3976e-08  
a 2.874630495132487 1.2261e-08 au
q 2.697244613545027 9.7875e-08 au
i 2.830289981383316 4.0281e-06 deg
node 138.4971338794806 7.7936e-05 deg
peri 277.0882029621339 8.5014e-05 deg
M 186.8794111785334 3.4172e-05 deg
tp 2459856.586580363869
0.00017031 TDB
period 1780.210956010668
n .202223224604086 1.2938e-09 deg/d
Q 3.052016376719948 1.3018e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3045  
   data-arc span      26532 days (72.64 yr)  
   first obs. used      1947-06-14  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40523  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:13:53  

Additional Information
 Earth MOID = 1.71059 au 
 Jupiter MOID = 2.16416 au 
 T_jup = 3.292 
[ 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 11.3   n/a MPO395013  
diameter diameter 15.677 km 0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.488 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Slivan, S.M.; Binzel, R.P.; Boroumand, S.C.; Pan M.W.; et al. (2008) Icarus 195, 226-276.]
[Arredondo, A.; Hartt, A.-M.; Yazdi, S.K. (2014) Minor Planet Bull. 41, 252-254.]
[Klinglesmith III, D.A.; Hendrickx, S. (2018) Minor Planet Bull. 45, 162-165.]
geometric albedo albedo 0.286   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

2144 Marietta           Discovered 1975 Jan. 18 by L. I. Chernykh at the Crimean Astrophysical Observatory.
Named in honor of Marietta Sergeevna Shaginyan, Soviet writer, doctor of philology, a member of the Armenian Academy of Sciences.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5284Last Updated: 2007-10-23

[ show close-approach data ]
Alternate Designations
 1975 BC1 = 1929 VB = 1947 LH = 1968 UC3 = 1971 HC = 1972 NM = 1973 TA1 = 1977 NO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Feb-27 08:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin