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20593 Freilich (1999 RM180)
Classification: Main-belt Asteroid          SPK-ID: 2020593
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07349963067739136 3.2187e-08  
a 2.37923306035114 7.6153e-09 au
q 2.204360309119892 7.6547e-08 au
i 7.069193003004679 3.241e-06 deg
node 120.6409929666914 2.7614e-05 deg
peri 88.2924671069912 3.5831e-05 deg
M 62.67551445028492 2.2413e-05 deg
tp 2458967.127696804414
(2020-Apr-27.62769680)
8.3633e-05 TDB
period 1340.460144400602
3.67
6.4357e-06
1.762e-08
d
yr
n .2685644936955415 1.2894e-09 deg/d
Q 2.554105811582389 8.175e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1796  
   data-arc span      11211 days (30.69 yr)  
   first obs. used      1989-12-26  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51701  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:24:41  

Additional Information
 Earth MOID = 1.21183 au 
 Jupiter MOID = 2.42903 au 
 T_jup = 3.525 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.54   n/a E2021B10  
diameter diameter 3.292 km 0.662 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.15446 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.283   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20593 Freilich           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Janet Freilich (b. 1987) was awarded second place in the 2004 Intel International Science and Engineering Fair for her biochemistry project. She attends the Sir Winston Churchill Secondary School, Vancouver, British Columbia, Canada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

Alternate Designations
 1999 RM180 = 1989 YZ7 = 1998 HB110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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