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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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2027117050565163 1.3252e-08  
a 2.80125548678244 8.7266e-09 au
q 2.23340821075785 3.8093e-08 au
i 2.264318069386423 5.2998e-07 deg
node 251.5431671833286 9.9381e-06 deg
peri 234.2983419086289 1.0058e-05 deg
M 223.054987722881 6.8073e-06 deg
tp 2459851.935205863427
(2022-Sep-29.43520586)
3.4405e-05 TDB
period 1712.487882627451
4.69
8.0022e-06
2.191e-08
d
yr
n .2102204655881454 9.8233e-10 deg/d
Q 3.36910276280703 1.0496e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2959  
   data-arc span      35407 days (96.94 yr)  
   first obs. used      1924-01-29  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43928  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:48:58  

Additional Information
 Earth MOID = 1.24963 au 
 Jupiter MOID = 1.7146 au 
 T_jup = 3.293 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457008.5 (2014-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1999392819231589 1.3051e-08  
q 2.242716831159209 3.7428e-08 au
tp 2456416.691026406991
(2013-May-04.19102641)
2.6591e-05 TDB
node 251.7579458821229 9.8812e-06 deg
peri 233.0879075878846 1.0029e-05 deg
i 2.268256145599074 5.303e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2959  
   data-arc span      35407 days (96.94 yr)  
   first obs. used      1924-01-29  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43928  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:48:58  

Additional Information
 Jupiter MOID = 1.7146 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.703411234043817E-16 -4.80234853936341E-16 8.959200974636387E-14 7.254021234384565E-15 2.049928925223812E-15 8.082029854628717E-16
q -4.80234853936341E-16 1.400885110021223E-15 -1.948415096333142E-13 -1.46256985674132E-14 8.156395053546956E-16 -1.945960886455405E-15
tp 8.959200974636387E-14 -1.948415096333142E-13 7.070731238711411E-10 5.153373225424694E-11 6.144951802413577E-11 2.403148256992065E-12
node 7.254021234384565E-15 -1.46256985674132E-14 5.153373225424694E-11 9.76386486372889E-11 -8.969677825227635E-11 4.298348275269169E-12
peri 2.049928925223812E-15 8.156395053546956E-16 6.144951802413577E-11 -8.969677825227635E-11 1.005875325760733E-10 -3.961429556863694E-12
i 8.082029854628717E-16 -1.945960886455405E-15 2.403148256992065E-12 4.298348275269169E-12 -3.961429556863694E-12 2.81221524478108E-13

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1903-Jul-19 13:50 00:02 Jupiter 1.83993350753842 1.83993254703672 1.83993446803898 1.81391327585158 1.53934124153581 2416315.076326441 2.05871808003387 80.2124274425403 13.8592295744932 -41.4826813892143 3026470.02580561 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50
1926-Oct-24 18:34 00:01 Jupiter 1.75727521317655 1.75727482655826 1.75727559979433 1.44045881563823 1.05399409425393 2424813.273817011 1.46142078622686 95.8580234193578 35.0785237177797 8.95665448282427 2432643.02914299 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50
1950-Feb-13 20:19 < 00:01 Jupiter 1.72600954942875 1.72600943546304 1.72600966339495 1.3264941041717 0.882103129299386 2433326.346677306 0.970656247938954 112.200392332119 35.4067627688085 57.4280588277862 9444888.5883359 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50
1973-Jun-05 19:00 < 00:01 Jupiter 1.75935726802239 1.75935708827027 1.75935744777511 1.42067008955577 1.0273394233285 2441839.291561435 0.583233600712998 85.5070339763814 11.6676501505811 53.3707234434143 21211609.4105999 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50
1996-Sep-10 13:22 < 00:01 Jupiter 1.86140853502506 1.86140837140415 1.86140869864598 1.71150044888687 1.42096660103034 2450337.057075201 0.250323399198173 18.2814360122974 2.78639840166609 39.4004145533739 15102509.4172631 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50
2105-Jul-20 18:20 00:01 Jupiter 1.89048145048501 1.89048093137114 1.89048196959888 2.08623414189819 1.85910759339381 2490096.264034122 1.12111954886379 45.6956367549394 4.78297230939242 -75.2512250262428 5575350.4308697 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50
2128-Oct-19 07:16 00:01 Jupiter 1.77371726417732 1.77371684949851 1.77371767885562 1.52307816921412 1.16819747500255 2498587.802762535 1.37212356265999 91.3024663084883 23.7941952988284 -3.81085339820736 1923162.47050688 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50
2152-Feb-06 21:34 00:02 Jupiter 1.72540810158943 1.72540792508392 1.72540827809484 1.30573606933871 0.850366907671874 2507098.398609478 1.68418288615532 127.077060486422 59.6791385036104 18.3931730152591 4089654.4218441 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50
2175-Jun-01 05:08 00:02 Jupiter 1.73613481869678 1.73613444569775 1.7361351917031 1.32280995828638 0.879812239873946 2515613.714110821 2.13806514892806 265.535009110968 31.8403732238111 61.6496316878468 13048227.63939 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50
2198-Sep-16 05:15 00:03 Jupiter 1.79561928098734 1.79561816437561 1.79562039760233 1.50213324687799 1.14584994919007 2524121.718972842 2.76191435229013 236.322397316209 9.44140370320225 53.49773988973 23087732.6934522 T 40 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:03 2021-Apr-12 11:50

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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