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109749 (2001 RO68)
Classification: Main-belt Asteroid          SPK-ID: 2109749
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1104115744343605 3.9754e-08  
a 3.094535153074331 1.9965e-08 au
q 2.752862654680919 1.2415e-07 au
i 8.147892691860257 3.7795e-06 deg
node 233.2863589619354 3.4177e-05 deg
peri 154.8004250121049 3.9065e-05 deg
M 141.8039225394633 2.0027e-05 deg
tp 2458217.291663926269
(2018-Apr-08.79166393)
0.00010786 TDB
period 1988.344158167252
5.44
1.9243e-05
5.268e-08
d
yr
n .1810551752428154 1.7522e-09 deg/d
Q 3.436207651467743 2.217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      6840 days (18.73 yr)  
   first obs. used      2001-08-31  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:10:09  

Additional Information
 Earth MOID = 1.7609 au 
 Jupiter MOID = 1.99929 au 
 T_jup = 3.199 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457251.5 (2015-Aug-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .109774322922368 3.9564e-08  
q 2.754604941449082 1.2331e-07 au
tp 2458220.075170854241
(2018-Apr-11.57517085)
0.0001089 TDB
node 233.3086679611845 3.4173e-05 deg
peri 155.4174199605922 3.9165e-05 deg
i 8.148015038184763 3.7796e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      6840 days (18.73 yr)  
   first obs. used      2001-08-31  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:10:09  

Additional Information
 Jupiter MOID = 1.99929 au 
 T_jup = 3.199 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.565293419989988E-15 -4.828552662363965E-15 -1.566430489085175E-12 2.365843156074976E-15 -3.018426395056821E-13 -1.636087265799888E-16
q -4.828552662363965E-15 1.520572742139557E-14 5.459378066756777E-12 -9.23971743001858E-15 1.013502100195199E-12 1.509654209796721E-15
tp -1.566430489085175E-12 5.459378066756777E-12 1.185887616918674E-8 -6.270376472382479E-12 2.117778665541221E-9 1.796803675675322E-12
node 2.365843156074976E-15 -9.23971743001858E-15 -6.270376472382479E-12 1.167804476935538E-9 -1.156888967248011E-9 -4.359960050529389E-11
peri -3.018426395056821E-13 1.013502100195199E-12 2.117778665541221E-9 -1.156888967248011E-9 1.533899017730689E-9 4.34448522811951E-11
i -1.636087265799888E-16 1.509654209796721E-15 1.796803675675322E-12 -4.359960050529389E-11 4.34448522811951E-11 1.428566950075939E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO502757  
diameter diameter 4.729 km 0.755 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.218   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109749 (2001 RO68)          Discovered 2001-Sep-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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