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109 Felicitas (A869 TA)
Classification: Main-belt Asteroid          SPK-ID: 2000109
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2991395195228356 1.1321e-08  
a 2.694472548224681 8.0884e-09 au
q 1.888449324781279 3.1861e-08 au
i 7.844852346220773 4.448e-07 deg
node 2.768344615367822 1.9467e-06 deg
peri 57.607280635652 2.7265e-06 deg
M 340.9781109711786 1.7464e-06 deg
tp 2459085.861141629305
(2020-Aug-24.36114163)
8.1621e-06 TDB
period 1615.507846775287
4.42
7.2743e-06
1.992e-08
d
yr
n .2228401432519164 1.0034e-09 deg/d
Q 3.500495771668083 1.0508e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2117  
   data-arc span      8865 days (24.27 yr)  
   first obs. used      1996-05-28  
   last obs. used      2020-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3597  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Sep-16 11:03:01  

Additional Information
 Earth MOID = .914008 au 
 Jupiter MOID = 1.94682 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 9.0   n/a MPO492749 IRAS observations used: 15
magnitude slope G 0.04   n/a PDS3 (MPC 17257) Fit
diameter diameter 82.588 km 0.616 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.191 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
geometric albedo albedo 0.036   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.696   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=8.46, mean=12.89, max.=24.09) deg.
U-B UB 0.408   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=8.46, mean=15.54, max.=26.17) deg.
Tholen spectral type spec_T GC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

109 Felicitas (A869 TA)          Discovered 1869-Oct-09 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A869 TA = A911 HA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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