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12091 Jesmalmquist (1998 HS96)
Classification: Main-belt Asteroid          SPK-ID: 2012091
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1056064365906517 3.1984e-08  
a 2.453004449473151 9.1983e-09 au
q 2.193951390623278 7.8294e-08 au
i 5.867904552500984 4.5822e-06 deg
node 184.2905016422961 3.3656e-05 deg
peri 95.88488356087876 4.05e-05 deg
M 218.9551761881326 2.2039e-05 deg
tp 2459550.294742750008
(2021-Dec-01.79474275)
8.6371e-05 TDB
period 1403.285154611604
3.84
7.893e-06
2.161e-08
d
yr
n .2565408739748547 1.443e-09 deg/d
Q 2.712057508323024 1.017e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1708  
   data-arc span      15810 days (43.29 yr)  
   first obs. used      1976-10-22  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51182  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:14:43  

Additional Information
 Earth MOID = 1.18724 au 
 Jupiter MOID = 2.40132 au 
 T_jup = 3.480 
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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 14.3   n/a MPO452341  
diameter diameter 3.441 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.342   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12091 Jesmalmquist           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Jessica Lea Malmquist (b. 1987) is a finalist in the 2002 Intel International Science and Engineering Fair for her behavioral and social sciences project. She attends the Olympia Junior High School, Salt Lake City, Utah, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1998 HS96 = 1976 UR12 = 1991 PK21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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