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243945 (2001 QU39)
Classification: Main-belt Asteroid          SPK-ID: 2243945
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2192410609258402 4.2677e-08  
a 2.797974109328104 1.6978e-08 au
q 2.184543297155978 1.1507e-07 au
i 10.79989035534811 4.7134e-06 deg
node 137.466453921702 2.1919e-05 deg
peri 185.4729278590446 2.5076e-05 deg
M 81.12984944262298 9.8839e-06 deg
tp 2459011.250455972188
(2020-Jun-10.75045597)
4.6643e-05 TDB
period 1709.479763648484
4.68
1.556e-05
4.26e-08
d
yr
n .2105903840778229 1.9168e-09 deg/d
Q 3.41140492150023 2.0701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      352  
   data-arc span      7084 days (19.39 yr)  
   first obs. used      2001-08-16  
   last obs. used      2021-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 11:38:36  

Additional Information
 Earth MOID = 1.17162 au 
 Jupiter MOID = 1.93032 au 
 T_jup = 3.265 
[ 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 16.45   n/a E2021B55  
diameter diameter 3.210 km 0.932 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243945 (2001 QU39)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1919-Feb-24 04:37 00:02 Jupiter 1.99844899102542 1.99844820088616 1.9984497811648 2.64232086730429 2.47672761423269 2422013.692580566 2.4909073322925 92.0552394311004 39.6673552631146 83.0857794339041 2984988.13363416 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 11:38:38 2021-Jul-09 11:38
2050-Nov-19 09:51 < 00:01 Jupiter 1.93830663137122 1.93830628284282 1.93830697989985 2.78926930662059 2.62793479907945 2470129.910357592 0.970537388997246 104.328793024419 15.0791581061571 -84.8618841225412 2601476.14890635 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 11:38:38 2021-Jul-09 11:38
2074-Feb-08 19:37 00:02 Jupiter 1.92440227741123 1.92440183772644 1.92440271709689 2.76247344856435 2.59826150129071 2478612.317642911 1.6398727299836 127.874872987087 19.7122044518539 86.9205743098006 2830065.56595499 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 11:38:38 2021-Jul-09 11:38
2097-Apr-26 15:53 00:02 Jupiter 1.9751351142943 1.97513410472009 1.97513612386885 2.75022012210806 2.58959940555056 2487090.161470506 2.42656254852002 97.5992413924624 41.0020116483947 76.5771555534571 2837554.43139036 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 11:38:38 2021-Jul-09 11:38

Alternate Designations
 2001 QU39 = 2006 QA111 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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