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227990 (2007 JQ9)
Classification: Main-belt Asteroid          SPK-ID: 2227990
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117664478551275 5.2152e-08  
a 3.108036728007552 3.3987e-08 au
q 2.742331207088333 1.6408e-07 au
i 10.76283868953962 5.513e-06 deg
node 62.57727616385537 2.6772e-05 deg
peri 178.9098620390555 3.6666e-05 deg
M 173.8296304874193 2.8895e-05 deg
tp 2458234.117745497702
(2018-Apr-25.61774550)
0.00015289 TDB
period 2001.371173863285
5.48
3.2828e-05
8.988e-08
d
yr
n .1798766788996392 2.9505e-09 deg/d
Q 3.473742248926772 3.7986e-08 au
  Orbit Determination Parameters
   # obs. used (total)      359  
   data-arc span      7236 days (19.81 yr)  
   first obs. used      2001-03-21  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57948  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:56  

Additional Information
 Earth MOID = 1.7282 au 
 Jupiter MOID = 1.53908 au 
 T_jup = 3.182 
[ 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 15.3   n/a MPO321158  
diameter diameter 5.177 km 2.372 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227990 (2007 JQ9)          Discovered 2007-May-07 by Lulin at Lulin
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2007 JQ9 = 2004 XT183 = 2006 DA202 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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