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30241 Donnamower (2000 HN8)
Classification: Main-belt Asteroid          SPK-ID: 2030241
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05206542849005932 3.3404e-08  
a 2.220046475849603 6.803e-09 au
q 2.104458804816647 7.6823e-08 au
i 2.732057739180169 3.604e-06 deg
node 202.8923889308988 6.7697e-05 deg
peri 111.2888796326803 7.6268e-05 deg
M 357.6338566861917 3.3978e-05 deg
tp 2459208.441089143710
(2020-Dec-24.94108914)
0.00011403 TDB
period 1208.207497429404
3.31
5.5536e-06
1.52e-08
d
yr
n .2979620642695398 1.3696e-09 deg/d
Q 2.335634146882559 7.1572e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1478  
   data-arc span      10553 days (28.89 yr)  
   first obs. used      1991-10-01  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52051  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:32:59  

Additional Information
 Earth MOID = 1.09039 au 
 Jupiter MOID = 2.77169 au 
 T_jup = 3.647 
[ 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 15.55   n/a E2021B10  
diameter diameter 1.920 km 0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.331   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

30241 Donnamower           Discovered 2000 Apr. 27 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Donna Mower mentored a finalist in the 2014 Broadcom MASTERS, a math and science competition for middle school students. She teaches at the Pennfield Middle School, Hatfield, Pennsylvania.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-01-05Last Updated: 2015-01-07

[ show close-approach data ]
Alternate Designations
 2000 HN8 = 1998 XY80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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