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11547 Griesser (1992 UP8)
Classification: Main-belt Asteroid          SPK-ID: 2011547
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .219969137676179 3.3922e-08  
a 2.343669285711329 6.7881e-09 au
q 1.828134373935262 7.9326e-08 au
i 2.027967479793483 3.4913e-06 deg
node 297.8894996724287 0.00012634 deg
peri 114.244421366122 0.00012669 deg
M 296.3080219889282 1.0122e-05 deg
tp 2459432.359639034719
(2021-Aug-05.85963903)
3.7329e-05 TDB
period 1310.517786682475
3.59
5.6936e-06
1.559e-08
d
yr
n .2747005829744028 1.1934e-09 deg/d
Q 2.859204197487396 8.2812e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1516  
   data-arc span      11077 days (30.33 yr)  
   first obs. used      1990-03-02  
   last obs. used      2020-06-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50286  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:50:01  

Additional Information
 Earth MOID = .839452 au 
 Jupiter MOID = 2.51727 au 
 T_jup = 3.529 
[ 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 15.07   n/a E2021B10  
diameter diameter 2.109 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.34 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.397   0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

11547 Griesser           Discovered 1992 Oct. 31 by F. Borngen at Tautenburg.
Swiss amateur astronomer Markus Griesser (b. 1949) is cofounder of the Eschenberg Observatory in Winterthur. A passionate science writer and popularizer of astronomy, he is also a diligent observer of near-earth objects. This minor planet was numbered as a result of observations made by him in Sept. 1999.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1992 UP8 = 1990 EU6 = 1997 AH14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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