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26209 (1997 RD1)
Classification: Mars-crossing Asteroid          SPK-ID: 2026209
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .397330376346534 4.1077e-08  
a 2.672284831293265 6.0283e-09 au
q 1.610504893570378 1.0744e-07 au
i 13.489638686792 4.6309e-06 deg
node 169.9917382135953 1.785e-05 deg
peri 162.3705132025439 1.8942e-05 deg
M 123.243991957328 7.3614e-06 deg
tp 2458654.257102888785
(2019-Jun-19.75710289)
3.1201e-05 TDB
period 1595.594558703718
4.37
5.3992e-06
1.478e-08
d
yr
n .2256212256655405 7.6345e-10 deg/d
Q 3.734064769016152 8.4235e-09 au
  Orbit Determination Parameters
   # obs. used (total)      892  
   data-arc span      13268 days (36.33 yr)  
   first obs. used      1984-09-24  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51604  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:14:40  

Additional Information
 Earth MOID = .604587 au 
 Jupiter MOID = 1.70987 au 
 T_jup = 3.226 
[ 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 15.6   n/a MPO435945  
SMASSII spectral type spec_B Sq   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

26209 (1997 RD1)          Discovered 1997-Sep-02 by JPL/GEODSS NEAT at Haleakala
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 RD1 = 1984 SM7 = 2001 KU65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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