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12291 Gohnaumann (1991 LJ2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2012291
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07168337713231018 3.4604e-08  
a 3.22827384933779 2.0164e-08 au
q 2.996860277509334 1.1846e-07 au
i 7.147219920897115 3.9199e-06 deg
node 90.00055126115781 2.9388e-05 deg
peri 217.1684019234642 4.1746e-05 deg
M 306.4697023700037 2.8794e-05 deg
tp 2459315.529436499351
(2021-Apr-11.02943650)
0.0001692 TDB
period 2118.62444561144
5.80
1.9849e-05
5.434e-08
d
yr
n .1699215737577799 1.592e-09 deg/d
Q 3.459687421166245 2.1609e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1950  
   data-arc span      13308 days (36.44 yr)  
   first obs. used      1984-02-26  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46253  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:32:37  

Additional Information
 Earth MOID = 1.98561 au 
 Jupiter MOID = 1.72183 au 
 T_jup = 3.171 
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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 12.7   n/a MPO347622  
diameter diameter 13.338 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.22070 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.099   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12291 Gohnaumann           Discovered 1991 June 6 by E. W. Elst at the European Southern Observatory.
Gottfried O. H. Naumann (b. 1935) is the director of the Universitäts-Augenklinik in Erlangen-Nürnberg and president of the International Council of Ophthalmology. He is considered one of the foremost ophthalmologists in the world and has received many honors.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

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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-Feb-22 12:25 00:03 Jupiter 1.93296497385785 1.93296410325889 1.93296584445955 3.68705588989481 3.56622825486793 2417629.017264289 3.44599586372652 135.028306219012 15.0110333575527 -73.4102161265416 4332923.85173259 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32
1918-Aug-18 08:23 00:03 Jupiter 1.87719753228837 1.87719687516932 1.8771981894087 3.58069422973186 3.4523815186536 2421823.848964733 3.03779935321839 101.426355020957 14.5276920973778 -74.6735830801813 4183109.53517545 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32
1930-Feb-12 17:43 00:03 Jupiter 1.83218916020046 1.83218868437503 1.83218963602622 3.47901068858758 3.34348826375849 2426020.238358545 2.64238641962979 67.4193602640918 14.4828036719966 -76.9141866715527 3978763.94473922 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32
1941-Aug-11 09:23 00:02 Jupiter 1.80894068006926 1.80894031097837 1.80894104916016 3.40543070821037 3.26503809170017 2430217.891255889 2.26108763484034 47.7006867060425 14.3069407199567 -83.9772588473837 3967060.99810262 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32
1953-Feb-04 21:41 00:02 Jupiter 1.80349407250924 1.80349373545722 1.80349440956126 3.35975939508629 3.21693494067052 2434413.403551454 1.89796017111014 57.0375797404004 13.2823058156255 -88.5501188375274 4164661.42940121 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32
1964-Jul-25 08:58 00:02 Jupiter 1.81595127854778 1.81595093148587 1.8159516256097 3.35073122875692 3.20850908663485 2438601.873828148 1.5466587929372 72.2474762051442 13.6064702939534 -88.5016230061111 4160971.69945054 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32
1976-Jan-03 13:30 00:01 Jupiter 1.84282239964289 1.84282203554847 1.8428227637373 3.39479428151966 3.25658742259869 2442781.062292631 1.20053902508479 72.5293453122674 14.4059889329787 -89.234670961339 4170177.52524215 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32
1987-Jun-02 00:48 < 00:01 Jupiter 1.88508187811136 1.88508150080853 1.88508225541419 3.52566083176757 3.39582474605001 2446948.533525397 0.855384519407942 57.9544396829057 15.2103423018745 88.3457296801147 4230529.12919936 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32
1998-Oct-21 05:57 < 00:01 Jupiter 1.93727775170597 1.9372773626359 1.93727814077594 3.74939603068455 3.63091234615749 2451107.747683499 0.519580250278933 42.1989499988165 15.7140478713751 83.1969666341697 4288427.77015202 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32
2010-Mar-04 09:04 < 00:01 Jupiter 1.9938308317878 1.99383042997206 1.99383123360353 4.04279900723881 3.93631559975388 2455259.877705005 0.236537534190521 34.5851578553662 16.7893879340716 80.5862988038845 4330923.01530477 T 35 CATAB v2.0f-lin.ifort 2020-Aug-25 00:32:50 2020-Aug-25 00:32

Alternate Designations
 1991 LJ2 = 1984 DQ2 = 1998 QV106 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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