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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1278279673115603 4.4257e-08  
a 3.109317223056562 1.4006e-08 au
q 2.711859522706416 1.435e-07 au
i 2.434125099717405 4.0067e-06 deg
node 147.8732878290854 7.6086e-05 deg
peri 203.7159074597772 7.7194e-05 deg
M 358.4562739512907 1.1831e-05 deg
tp 2459209.087439834499
(2020-Dec-25.58743983)
6.5812e-05 TDB
period 2002.608133097544
5.48
1.3531e-05
3.705e-08
d
yr
n .1797655737286797 1.2146e-09 deg/d
Q 3.506774923406707 1.5796e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1813  
   data-arc span      22025 days (60.30 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49752  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:06:56  

Additional Information
 Earth MOID = 1.7046 au 
 Jupiter MOID = 1.91821 au 
 T_jup = 3.205 
[ 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 13.87   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

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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 1.97482089177989 1.97482050323063 1.97482128032914 3.06904973481179 2.92596038268149 2417753.087450737 2.2100561082995 45.3529877467889 9.35169772695052 84.6511846354632 2944621.88370661 T 22 CATAB v2.0f-lin.ifort 2021-Feb-24 02:07:00 2021-Feb-24 02:07
1968-Nov-09 05:06 < 00:01 Jupiter 1.94309567649872 1.94309529169038 1.94309606130696 2.513742581838 2.33389671223531 2440169.712235512 0.958706395712053 55.2974131087241 7.59082038107663 -88.7778326244988 3214710.95359506 T 22 CATAB v2.0f-lin.ifort 2021-Feb-24 02:07:00 2021-Feb-24 02:07
1978-Dec-29 07:29 < 00:01 Jupiter 1.96108535457417 1.9610850426314 1.96108566651682 2.91428929357996 2.76211001684243 2443871.811849864 0.713030588594402 36.9310015450862 8.7407737173821 86.7102408622016 3937706.08513463 T 22 CATAB v2.0f-lin.ifort 2021-Feb-24 02:07:00 2021-Feb-24 02:07
2040-May-12 02:49 < 00:01 Jupiter 1.95532512926921 1.95532469338587 1.95532556515256 2.5390600247236 2.36229775752994 2466286.617117820 0.577075370076836 41.5057451011107 8.29070353029714 -85.4056966873645 2912455.65998016 T 22 CATAB v2.0f-lin.ifort 2021-Feb-24 02:07:00 2021-Feb-24 02:07
2050-Jul-01 14:15 < 00:01 Jupiter 1.94885303693572 1.94885271804611 1.94885335582534 2.78512935344393 2.62444150084349 2469989.093492433 0.835512269191912 42.3700131829177 8.13987144793439 87.372269406309 4007191.55297138 T 22 CATAB v2.0f-lin.ifort 2021-Feb-24 02:07:00 2021-Feb-24 02:07
2111-Nov-13 07:46 00:02 Jupiter 1.97089470850465 1.97089414354439 1.9708952734657 2.58825781774483 2.41651558357455 2492402.823409671 2.05661653131687 101.185324231941 8.60892209829554 -84.4401966572003 3066642.14140089 T 22 CATAB v2.0f-lin.ifort 2021-Feb-24 02:07:00 2021-Feb-24 02:07
2122-Jan-03 02:02 00:02 Jupiter 1.94676105434397 1.94676071137997 1.94676139730797 2.69764769171855 2.53122828861296 2496106.584515236 2.33502681004087 93.3321037039698 8.00727916989447 -89.7211526829425 3772395.9948106 T 22 CATAB v2.0f-lin.ifort 2021-Feb-24 02:07:00 2021-Feb-24 02:07
2183-May-15 18:56 00:04 Jupiter 1.99229821547401 1.99229746558614 1.99229896536506 2.66397796911328 2.49929624140286 2518519.289200620 3.54003606955615 159.998059832118 9.18317898983313 -84.2124416350552 3170523.68164378 T 22 CATAB v2.0f-lin.ifort 2021-Feb-24 02:07:00 2021-Feb-24 02:07
2193-Jul-08 09:07 00:04 Jupiter 1.94609817730984 1.94609782606589 1.946098528554 2.62726235096913 2.45601804546924 2522225.879723629 3.83474843367526 166.508406979242 7.87034987728617 -88.7002126486209 3609407.67774271 T 22 CATAB v2.0f-lin.ifort 2021-Feb-24 02:07:00 2021-Feb-24 02:07

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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