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1014 Semphyra (A924 BM)
Classification: Main-belt Asteroid          SPK-ID: 2001014
[ 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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2027117269545883 3.5084e-08  
a 2.801255486741747 8.9528e-09 au
q 2.233408149383312 9.8721e-08 au
i 2.264318341099359 3.0387e-06 deg
node 251.5429724379464 9.2682e-05 deg
peri 234.2985320852096 9.2897e-05 deg
M 223.0549930290595 8.8067e-06 deg
tp 2459851.935180608214
(2022-Sep-29.43518061)		 4.3749e-05 TDB
period 1712.487882590136
4.69		 8.2097e-06
2.248e-08		 d
yr
n .2102204655927261 1.0078e-09 deg/d
Q 3.369102824100183 1.0768e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2933  
   data-arc span      35407 days (96.94 yr)  
   first obs. used      1924-01-29  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43825  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:51:45  

Additional Information
 Earth MOID = 1.24963 au 
 Jupiter MOID = 1.7146 au 
 T_jup = 3.293 
[ 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 11.93   n/a E2021B10  
diameter diameter 17.487 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.636 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pray, D. (2005) Minor Planet Bull. 32, 8-9.]
geometric albedo albedo 0.083   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B Xe   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)

1014 Semphyra (A924 BM)          Discovered 1924-Jan-29 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A924 BM = 1932 WH = 1984 YP6 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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