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78421 (2002 QE41)
Classification: Main-belt Asteroid          SPK-ID: 2078421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1137247333966129 6.8479e-08  
a 3.017908227876879 2.3732e-08 au
q 2.674697419246137 2.0709e-07 au
i 9.597335851070566 6.9728e-06 deg
node 340.4906745259355 2.7373e-05 deg
peri 347.5298647850436 3.3952e-05 deg
M 168.964163539645 2.133e-05 deg
tp 2458301.727920704693
(2018-Jul-02.22792070)
0.00011219 TDB
period 1914.950139532944
5.24
2.2588e-05
6.184e-08
d
yr
n .1879944509092043 2.2175e-09 deg/d
Q 3.361119036507622 2.6431e-08 au
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      10390 days (28.45 yr)  
   first obs. used      1992-10-03  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53111  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:36:43  

Additional Information
 Earth MOID = 1.66269 au 
 Jupiter MOID = 1.99772 au 
 T_jup = 3.216 
[ 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 14.63   n/a E2020-QM9  

78421 (2002 QE41)          Discovered 2002-Aug-29 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ 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
1931-Oct-27 16:03 00:03 Jupiter 1.97692904010441 1.97692842310719 1.97692965710152 3.41512338894997 3.2872724884143 2426642.168963829 2.8927186656014 123.997492535549 23.3169829997936 -85.46701021036 2218094.01783419 T 27 CATAB v2.0f-lin.ifort 2021-Apr-13 13:36:44 2021-Apr-13 13:36
1978-Aug-21 02:14 00:01 Jupiter 1.99977941183561 1.99977883633986 1.99977998733147 3.21053250495924 3.07577681608963 2443741.592761697 1.33725373866897 76.9430649031408 17.9946696222607 -78.1779597927163 2339397.40778568 T 27 CATAB v2.0f-lin.ifort 2021-Apr-13 13:36:44 2021-Apr-13 13:36
2109-Nov-12 14:14 00:03 Jupiter 1.97514783544278 1.97514723710579 1.97514843377977 3.49886736327963 3.37407657159972 2491672.093040049 3.20298831228707 141.200459980615 22.3843279711978 -85.086163739235 2289237.54605541 T 27 CATAB v2.0f-lin.ifort 2021-Apr-13 13:36:44 2021-Apr-13 13:36
2156-Sep-09 01:47 00:05 Jupiter 1.99716243936796 1.99716158630463 1.9971632924364 3.34935745630817 3.22024368840392 2508774.574097696 4.94632937103381 205.879913072709 17.7315847625728 -78.4436257486151 2405030.26890374 T 27 CATAB v2.0f-lin.ifort 2021-Apr-13 13:36:44 2021-Apr-13 13:36
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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