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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1278279688792804 4.4021e-08  
a 3.109317219335581 1.4005e-08 au
q 2.711859514586541 1.428e-07 au
i 2.434125099124217 3.9548e-06 deg
node 147.8732879200439 7.6043e-05 deg
peri 203.7159080584333 7.714e-05 deg
M 358.4562735935045 1.1787e-05 deg
tp 2459209.087441809377
(2020-Dec-25.58744181)
6.5568e-05 TDB
period 2002.608129502703
5.48
1.3531e-05
3.705e-08
d
yr
n .1797655740513731 1.2146e-09 deg/d
Q 3.50677492408462 1.5796e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1823  
   data-arc span      22025 days (60.30 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49643  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:27:50  

Additional Information
 Earth MOID = 1.7046 au 
 Jupiter MOID = 1.91821 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457338.5 (2015-Nov-12.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1317061053176092 4.3942e-08  
q 2.698614030022426 1.4328e-07 au
tp 2457211.964804690366
(2015-Jul-08.46480469)
6.4856e-05 TDB
node 148.0574392111128 7.6301e-05 deg
peri 204.5490909579446 7.7331e-05 deg
i 2.43077667056084 3.9517e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1823  
   data-arc span      22025 days (60.30 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49643  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:27:50  

Additional Information
 Jupiter MOID = 1.91821 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.930907233800158E-15 -6.278154125524345E-15 4.677964439779305E-13 7.920444161619755E-15 1.131423052086266E-13 -5.222104861394648E-16
q -6.278154125524345E-15 2.052825001432756E-14 -1.634987175137932E-12 -2.667795276064383E-14 -3.876701608527831E-13 1.740438983815934E-15
tp 4.677964439779305E-13 -1.634987175137932E-12 4.206283494833159E-9 4.938328867053148E-12 8.27802366478429E-10 1.497654301590873E-13
node 7.920444161619755E-15 -2.667795276064383E-14 4.938328867053148E-12 5.821789228462239E-9 -5.815158568734276E-9 7.188310703486644E-11
peri 1.131423052086266E-13 -3.876701608527831E-13 8.27802366478429E-10 -5.815158568734276E-9 5.980071747740694E-9 -7.180373890392598E-11
i -5.222104861394648E-16 1.740438983815934E-15 1.497654301590873E-13 7.188310703486644E-11 -7.180373890392598E-11 1.561596439423009E-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 13.87   n/a E2021B10  
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 1.97482086889965 1.97482048226267 1.97482125553662 3.06904952000347 2.92596015647976 2417753.087508792 2.20994547024525 45.148882205737 9.25659347079566 84.6124708107348 2960898.97307043 T 23 CATAB v2.0f-lin.ifort 2021-Apr-12 23:27:58 2021-Apr-12 23:27
1968-Nov-09 05:06 < 00:01 Jupiter 1.94309565687494 1.94309527441503 1.94309603933484 2.51374263571084 2.33389676940501 2440169.712196506 0.958719757387847 55.2928211559601 7.53195755949512 -88.7667664532863 3234379.39724017 T 23 CATAB v2.0f-lin.ifort 2021-Apr-12 23:27:58 2021-Apr-12 23:27
1978-Dec-29 07:29 < 00:01 Jupiter 1.96108534185708 1.96108503338297 1.96108565033119 2.91428930771711 2.76211003160828 2443871.811824854 0.713023299891974 36.7741361975245 8.63475280164963 86.6855580146174 3977028.0733107 T 23 CATAB v2.0f-lin.ifort 2021-Apr-12 23:27:58 2021-Apr-12 23:27
2040-May-12 02:49 < 00:01 Jupiter 1.95532512086538 1.95532468633248 1.95532555539817 2.53906007524913 2.362297812061 2466286.617064283 0.576187483692504 41.4335559129077 8.23719565144943 -85.3283499819073 2927154.77128644 T 23 CATAB v2.0f-lin.ifort 2021-Apr-12 23:27:58 2021-Apr-12 23:27
2050-Jul-01 14:14 < 00:01 Jupiter 1.94885306426911 1.94885274964196 1.94885337889627 2.78512956269181 2.62444172614065 2469989.093378559 0.835042909927987 42.2933304134959 8.03838912064103 87.3908323308591 4062168.78439285 T 23 CATAB v2.0f-lin.ifort 2021-Apr-12 23:27:58 2021-Apr-12 23:27
2111-Nov-13 07:45 00:02 Jupiter 1.97089460569319 1.97089404124248 1.97089517014468 2.58825742213504 2.41651515155389 2492402.822748922 2.05576579373144 101.105936644102 8.56129014347167 -84.4194403379147 3081472.67939078 T 23 CATAB v2.0f-lin.ifort 2021-Apr-12 23:27:58 2021-Apr-12 23:27
2122-Jan-03 02:01 00:02 Jupiter 1.94676116731273 1.94676082877292 1.94676150585265 2.69764865499166 2.53122932614208 2496106.583727953 2.33442479123816 93.30070337362 7.90972303377294 -89.7058005093723 3820588.26231904 T 23 CATAB v2.0f-lin.ifort 2021-Apr-12 23:27:58 2021-Apr-12 23:27
2183-May-15 18:54 00:04 Jupiter 1.99229793551067 1.99229718568518 1.99229868533932 2.66397672956768 2.49929489721777 2518519.287692910 3.53944807783295 159.926961827074 9.14803553211531 -84.2027870197716 3182317.28314858 T 23 CATAB v2.0f-lin.ifort 2021-Apr-12 23:27:58 2021-Apr-12 23:27
2193-Jul-08 09:04 00:04 Jupiter 1.94609830528069 1.94609795841131 1.9460986521504 2.62726378798478 2.456019595312 2522225.878113594 3.83446171354642 166.492645846863 7.77454086892165 -88.6913680731436 3653269.32883792 T 23 CATAB v2.0f-lin.ifort 2021-Apr-12 23:27:58 2021-Apr-12 23:27

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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