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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1286317941506762 4.5339e-08  
a 3.112188850449562 1.5084e-08 au
q 2.711862414880505 1.461e-07 au
i 2.432859134085326 4.0723e-06 deg
node 147.876464065743 9.3006e-05 deg
peri 203.6272766573443 9.3975e-05 deg
M 322.6287628011357 1.3197e-05 deg
tp 2459208.676793801266
(2020-Dec-25.17679380)
7.3767e-05 TDB
period 2005.383053540795
5.49
1.458e-05
3.992e-08
d
yr
n .1795168256580047 1.3051e-09 deg/d
Q 3.51251528601862 1.7025e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1552  
   data-arc span      21861 days (59.85 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52087  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:35:23  

Additional Information
 Earth MOID = 1.70633 au 
 Jupiter MOID = 1.91204 au 
 T_jup = 3.204 
[ 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 13.9   n/a MPO350902  
rotation period rot_per 4.719 h n/a LCDB (Rev. 2019-August); 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 1.97482092156789 1.9748205082152 1.97482133492058 3.06905010225584 2.92596077030592 2417753.087296318 2.31792953460454 50.3479178663945 9.64144418933185 84.194808886444 2755382.08759261 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 00:35:37 2020-Aug-25 00:35
1968-Nov-09 05:06 < 00:01 Jupiter 1.9430956437967 1.94309523746708 1.94309605012621 2.51374238193619 2.33389649378603 2440169.712167826 0.999912930414544 60.8192337363415 8.05474852533595 -87.990671053751 3021405.72548085 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 00:35:37 2020-Aug-25 00:35
1978-Dec-29 07:29 < 00:01 Jupiter 1.96108535846608 1.96108504058739 1.96108567634477 2.91428947499483 2.76211020856273 2443871.811795235 0.746759564435929 42.9290514355403 8.79428121914781 86.2657546972723 3867351.89816063 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 00:35:37 2020-Aug-25 00:35
2040-May-12 02:49 < 00:01 Jupiter 1.95532510946606 1.95532466174819 1.95532555718381 2.53905982065233 2.36229753633155 2466286.617164746 0.608722860966412 46.5253319058586 8.71377969213876 -86.0897730347512 2775127.00028844 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 00:35:37 2020-Aug-25 00:35
2050-Jul-01 14:15 < 00:01 Jupiter 1.94885302211177 1.94885270135099 1.94885334287256 2.78512929383677 2.62444143632705 2469989.093559549 0.874255104739014 48.0058931662781 8.17146543742699 87.2359903839367 3977727.13056793 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 00:35:37 2020-Aug-25 00:35
2111-Nov-13 07:46 00:02 Jupiter 1.97089470782804 1.970894140367 1.97089527528987 2.58825764581386 2.41651539936336 2492402.823556075 2.16310311635752 107.24373881845 9.32542757531621 -85.0189889394861 2806290.37560303 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 00:35:37 2020-Aug-25 00:35
2122-Jan-03 02:02 00:02 Jupiter 1.94676102901668 1.94676067952581 1.94676137850766 2.69764752928004 2.5312281132584 2496106.584680589 2.44829930320039 99.0591053209554 8.08132470641076 -89.8674523122145 3704663.77248945 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 00:35:37 2020-Aug-25 00:35
2183-May-15 18:57 00:04 Jupiter 1.9922982363984 1.99229748564451 1.99229898715558 2.66397787452326 2.49929614236676 2518519.289445438 3.7204506429777 168.509841104253 10.1387902233364 -84.6693367565579 2862732.76393004 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 00:35:37 2020-Aug-25 00:35
2193-Jul-08 09:07 00:04 Jupiter 1.94609814923021 1.94609778698306 1.9460985114778 2.62726211945117 2.45601779525186 2522225.879983243 4.02201201060978 174.866083887565 7.95567184761842 -88.8031264010137 3530687.85395631 T 19 CATAB v2.0f-lin.ifort 2020-Aug-25 00:35:37 2020-Aug-25 00:35

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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