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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456995.5 (2014-Dec-04.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1999442888947673 3.4504e-08  
q 2.242681982696535 9.6651e-08 au
tp 2456416.685294200235
(2013-May-04.18529420)
3.6721e-05 TDB
node 251.7578338768898 9.2189e-05 deg
peri 233.085436004035 9.2426e-05 deg
i 2.268270808934077 3.0423e-06 deg
  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
 Jupiter MOID = 1.7146 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.190557583596417E-15 -3.325996998536866E-15 8.539899057091646E-14 3.632606497593303E-16 2.333407084221719E-14 2.213640310415278E-16
q -3.325996998536866E-15 9.341384194729369E-15 -1.514991827225645E-13 -1.739380064373004E-15 -4.631717956146536E-14 -5.907204912224628E-16
tp 8.539899057091646E-14 -1.514991827225645E-13 1.348440360561685E-9 1.965319135290187E-13 2.643828333384828E-10 2.617246674210141E-13
node 3.632606497593303E-16 -1.739380064373004E-15 1.965319135290187E-13 8.498835810422239E-9 -8.492146697787366E-9 8.926779721419087E-11
peri 2.333407084221719E-14 -4.631717956146536E-14 2.643828333384828E-10 -8.492146697787366E-9 8.54264185429654E-9 -8.915507105657681E-11
i 2.213640310415278E-16 -5.907204912224628E-16 2.617246674210141E-13 8.926779721419087E-11 -8.915507105657681E-11 9.255678403679863E-12

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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