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1877 Marsden (1971 FC)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001877
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2076964166587731 5.206e-08  
a 3.954331966766464 3.501e-08 au
q 3.133031386989831 2.1234e-07 au
i 17.51683271122111 6.2883e-06 deg
node 352.7751068983384 1.4727e-05 deg
peri 306.2450939576903 1.9103e-05 deg
M 320.8929541123887 1.5248e-05 deg
tp 2458912.504333055686
(2020-Mar-04.00433306)
0.00012372 TDB
period 2872.156598656029
7.86
3.8143e-05
1.044e-07
d
yr
n .1253413550530132 1.6646e-09 deg/d
Q 4.775632546543098 4.2282e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1836  
   data-arc span      25152 days (68.86 yr)  
   first obs. used      1950-10-05  
   last obs. used      2019-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45471  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:20:46  

Additional Information
 Earth MOID = 2.15773 au 
 Jupiter MOID = .925019 au 
 T_jup = 2.942 
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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 10.9   n/a MPO452186  
diameter diameter 35.642 km 0.370 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 13.18 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2018) Minor Planet Bull. 45, 390-393.]
geometric albedo albedo 0.073   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

1877 Marsden (1971 FC)          Discovered 1971-Mar-24 by Van Houten, C. J. at Palomar
Discovered by C. J. van Houten and I. van Houten-Groeneveld, Leiden, on plates exposed by T. Gehrels in a survey of faint Trojans with the 122 cm Schmidt camera at Palomar.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1971 FC = 1950 TG = 1950 TT2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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