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3656 Hemingway (1978 QX)
Classification: Main-belt Asteroid          SPK-ID: 2003656
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1403893992504421 1.2264e-08  
a 2.204480844400599 4.7653e-09 au
q 1.894995102996091 2.8884e-08 au
i .8089466353235931 6.1589e-07 deg
node 314.4693531645261 6.5194e-05 deg
peri 301.29649363 6.6039e-05 deg
M 36.58218006258764 6.4208e-06 deg
tp 2459079.014343952721
(2020-Aug-17.51434395)
2.1287e-05 TDB
period 1195.522959599336
3.27
3.8764e-06
1.061e-08
d
yr
n .301123451548475 9.7638e-10 deg/d
Q 2.513966585805106 5.4343e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2798  
   data-arc span      24861 days (68.07 yr)  
   first obs. used      1952-09-15  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46274  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:23:01  

Additional Information
 Earth MOID = .878609 au 
 Jupiter MOID = 2.52631 au 
 T_jup = 3.649 
[ 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 13.53   n/a E2021B10  
diameter diameter 5.291 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.627 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Polakis, T. (2020) Minor Planet Bull. 47, 314-321.]
geometric albedo albedo 0.229   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3656 Hemingway (1978 QX)          Discovered 1978-Aug-31 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1978 QX = 1984 HH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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