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12621 Alsufi (6585 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2012621
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1286317878229579 4.4192e-08  
a 3.112188847149787 1.4237e-08 au
q 2.71186243169824 1.4354e-07 au
i 2.43286006038116 4.0059e-06 deg
node 147.8765580381279 7.6678e-05 deg
peri 203.6271798663124 7.7767e-05 deg
M 322.6287666229553 1.1803e-05 deg
tp 2459208.676772180701
(2020-Dec-25.17677218)
6.5781e-05 TDB
period 2005.38305035141
5.49
1.3761e-05
3.768e-08
d
yr
n .1795168259435104 1.2319e-09 deg/d
Q 3.512515262601335 1.6069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1778  
   data-arc span      21964 days (60.13 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50032  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:49:54  

Additional Information
 Earth MOID = 1.70633 au 
 Jupiter MOID = 1.91204 au 
 T_jup = 3.204 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457283.5 (2015-Sep-18.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1317532910624584 4.417e-08  
q 2.69863136034483 1.4396e-07 au
tp 2457212.014722599941
(2015-Jul-08.51472260)
6.5296e-05 TDB
node 148.0566987305358 7.6892e-05 deg
peri 204.5611905848522 7.7927e-05 deg
i 2.430749479043048 4.0048e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1778  
   data-arc span      21964 days (60.13 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50032  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:49:54  

Additional Information
 Jupiter MOID = 1.91204 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.951021920473438E-15 -6.340839886546277E-15 4.405934437709558E-13 7.116623091930224E-15 1.078884026740049E-13 -5.659674883432685E-16
q -6.340839886546277E-15 2.072458231186188E-14 -1.545433409915358E-12 -2.406966693893586E-14 -3.707000510578046E-13 1.879966785882714E-15
tp 4.405934437709558E-13 -1.545433409915358E-12 4.263600357265072E-9 4.910684319477957E-12 8.387448635066689E-10 1.253475090591195E-13
node 7.116623091930224E-15 -2.406966693893586E-14 4.910684319477957E-12 5.912346297092859E-9 -5.905651514167877E-9 7.267256743990193E-11
peri 1.078884026740049E-13 -3.707000510578046E-13 8.387448635066689E-10 -5.905651514167877E-9 6.072666845660058E-9 -7.259752265477099E-11
i -5.659674883432685E-16 1.879966785882714E-15 1.253475090591195E-13 7.267256743990193E-11 -7.259752265477099E-11 1.603838335081728E-11

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 13.9   n/a MPO350902  
rotation period rot_per 4.719 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.]

12621 Alsufi           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
The Persian astronomer Abd al-Rahman al-Sufi (Azophi; 903-986) worked in Isfahan. His influential star atlas, completed around 964 and based on both Ptolemy's Almagest and pre-Islamic star lore, contains the earliest description of the Andromeda Galaxy, M 31.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080122/MPCPages.arcLast Updated: 2008-03-05

[ 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
1907-Jun-26 14:06 00:02 Jupiter 1.97482090967114 1.97482051931277 1.97482130002962 3.06904986145548 2.92596051684653 2417753.087398209 2.2162103309473 45.4622665178784 9.3762219592777 84.6068364894541 2933704.07685645 T 21 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:59 2020-Dec-18 02:49
1968-Nov-09 05:06 < 00:01 Jupiter 1.9430956739582 1.94309528907685 1.94309605883945 2.51374258114317 2.33389671124275 2440169.712209278 0.961269222194253 55.5559993840687 7.59443181547346 -88.7714542558724 3213046.50001879 T 21 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:59 2020-Dec-18 02:49
1978-Dec-29 07:29 < 00:01 Jupiter 1.96108536460346 1.96108505193823 1.96108567726858 2.91428940195791 2.76211013199119 2443871.811823212 0.71486543390601 37.056576591491 8.7516624207262 86.6754694572842 3927882.70779054 T 21 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:59 2020-Dec-18 02:49
2040-May-12 02:49 < 00:01 Jupiter 1.95532513021341 1.95532469428561 1.9553255661411 2.5390600280375 2.36229776118035 2466286.617129399 0.578723866167019 41.7218727643111 8.29491938492204 -85.440446650822 2910809.22276889 T 21 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:59 2020-Dec-18 02:49
2050-Jul-01 14:15 < 00:01 Jupiter 1.94885304091538 1.94885272188563 1.94885335994502 2.78512935945039 2.62444150755589 2469989.093514026 0.837893420672478 42.5288907334145 8.15078773981612 87.3815562364528 4005510.42457611 T 21 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:59 2020-Dec-18 02:49
2111-Nov-13 07:46 00:02 Jupiter 1.97089471519218 1.97089415000292 1.97089528038221 2.58825784459549 2.41651561293694 2492402.823460493 2.0626118430262 101.503609175487 8.61749630297773 -84.4565925801457 3062242.80721786 T 21 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:59 2020-Dec-18 02:49
2122-Jan-03 02:02 00:02 Jupiter 1.94676105467248 1.94676071167406 1.94676139767101 2.69764766946548 2.53122826492584 2496106.584571803 2.34174563391832 93.6110965562052 8.01771989218694 -89.7147753435477 3770697.49288841 T 21 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:59 2020-Dec-18 02:49
2183-May-15 18:57 00:04 Jupiter 1.99229822917568 1.99229747867014 1.99229897968439 2.66397801559934 2.49929629212183 2518519.289282156 3.55031916380829 160.469791093751 9.19620803008499 -84.2253658759934 3164404.11846245 T 21 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:59 2020-Dec-18 02:49
2193-Jul-08 09:07 00:04 Jupiter 1.94609817626527 1.94609782498549 1.94609852754527 2.62726231683719 2.45601800886235 2522225.879813500 3.84576643246232 166.980156597307 7.87716603398501 -88.697749519216 3608675.8510935 T 21 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:59 2020-Dec-18 02:49

Alternate Designations
 6585 P-L = 1997 JJ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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