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3849 Incidentia (1984 FC)
Classification: Main-belt Asteroid          SPK-ID: 2003849
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0478054450304625 1.602e-08  
a 2.474746890006355 7.5839e-09 au
q 2.356440513591848 3.836e-08 au
i 5.77245822093479 5.6014e-07 deg
node 25.80826399855232 4.8523e-06 deg
peri 80.01477313702259 1.5747e-05 deg
M 235.6352666302652 1.6502e-05 deg
tp 2459691.735053896078
(2022-Apr-22.23505390)
6.6449e-05 TDB
period 1421.983665391951
3.89
6.5365e-06
1.79e-08
d
yr
n .2531674651134412 1.1638e-09 deg/d
Q 2.593053266420862 7.9465e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2719  
   data-arc span      15402 days (42.17 yr)  
   first obs. used      1978-10-28  
   last obs. used      2020-12-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4487  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:38:07  

Additional Information
 Earth MOID = 1.38138 au 
 Jupiter MOID = 2.45281 au 
 T_jup = 3.473 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.97   n/a E2021B10  
diameter diameter 5.798 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.778 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.398   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B V   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)

3849 Incidentia (1984 FC)          Discovered 1984-Mar-31 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 FC = 1976 GH = 1980 FA11 = 1986 WM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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