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JPL Small-Body Database Browser
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26269 Marciaprill (1998 RG57)
Classification: Main-belt Asteroid          SPK-ID: 2026269
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1801973170765969 3.3636e-08  
a 2.402396885022922 1.0386e-08 au
q 1.969491411788617 8.1733e-08 au
i 2.437453515087879 4.8217e-06 deg
node 7.680501254181888 9.6225e-05 deg
peri 292.5433753561585 9.7489e-05 deg
M 232.8661335022642 1.8042e-05 deg
tp 2459080.812971524189
(2020-Aug-19.31297152)
6.9178e-05 TDB
period 1360.083465657734
3.72
8.82e-06
2.415e-08
d
yr
n .2646896378715291 1.7165e-09 deg/d
Q 2.835302358257226 1.2258e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1073  
   data-arc span      17539 days (48.02 yr)  
   first obs. used      1971-03-24  
   last obs. used      2019-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52972  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:56:57  

Additional Information
 Earth MOID = .95478 au 
 Jupiter MOID = 2.38448 au 
 T_jup = 3.501 
[ 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 15.5   n/a MPO384974  
rotation period rot_per 57.282 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

26269 Marciaprill           Discovered 1998 Sept. 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Marcia Prill mentored a finalist in the 2010 Intel Science Talent Search (STS), a science competition for high school seniors. She teaches at the Madison High School, Madison, New Jersey.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100228/MPCPages.arcLast Updated: 2010-10-29

[ show close-approach data ]
Alternate Designations
 1998 RG57 = 1284 T-1 = 2001 HO1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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