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20580 Marilpeters (1999 RG151)
Classification: Main-belt Asteroid          SPK-ID: 2020580
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1954805005485588 3.1722e-08  
a 2.373209569412711 9.3094e-09 au
q 1.909293374877285 7.7405e-08 au
i 3.125325546102479 3.6399e-06 deg
node 68.70541248536351 7.3623e-05 deg
peri 209.937892952268 7.4872e-05 deg
M 337.2101485137071 1.7504e-05 deg
tp 2459285.035973336154
(2021-Mar-11.53597334)
6.5207e-05 TDB
period 1335.372914532581
3.66
7.8574e-06
2.151e-08
d
yr
n .2695876156257149 1.5863e-09 deg/d
Q 2.837125763948138 1.1129e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1674  
   data-arc span      10675 days (29.23 yr)  
   first obs. used      1991-03-22  
   last obs. used      2020-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52112  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:24:25  

Additional Information
 Earth MOID = .891774 au 
 Jupiter MOID = 2.2948 au 
 T_jup = 3.515 
[ 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 14.56   n/a E2021B10  
diameter diameter 3.658 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.14 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 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 0.252   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20580 Marilpeters           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Marilyn Peters mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the St. Vincent de Paul Parish School, Cape Girardeau, Missouri.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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