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973 Aralia (A922 FB)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000973
[ 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120591251618985 1.3744e-08  
a 3.211219367158972 1.2962e-08 au
q 2.851372934172193 4.5415e-08 au
i 15.83015082235229 3.4559e-07 deg
node 348.4386867841716 1.0942e-06 deg
peri 87.73844769756249 6.97e-06 deg
M 97.99317940930132 8.829e-06 deg
tp 2458628.367344769884
(2019-May-24.86734477)		 4.9878e-05 TDB
period 2101.858079556214
5.75		 1.2726e-05
3.484e-08		 d
yr
n .1712770255525579 1.037e-09 deg/d
Q 3.571065800145752 1.4414e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2974  
   data-arc span      36148 days (98.97 yr)  
   first obs. used      1922-03-18  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41759  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:43:28  

Additional Information
 Earth MOID = 1.92198 au 
 Jupiter MOID = 1.76154 au 
 T_jup = 3.122 
[ 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 10.12   n/a E2021B10  
diameter diameter 51.609 km 0.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.3662 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2002) Minor Planet Bull. 29, 47-48.]
[Alkema, M.S. (2013) Minor Planet Bull. 40, 133-137.]
[Oey, J.; Williams, H.; Groom, R. (2017) Minor Planet Bull. 44, 200-204.]
geometric albedo albedo 0.098   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B Xk   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)

973 Aralia (A922 FB)          Discovered 1922-Mar-18 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A922 FB = 1954 SE 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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