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1241 Dysona (1932 EB1)
Classification: Main-belt Asteroid          SPK-ID: 2001241
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1012872956684945 4.0419e-08  
a 3.187721530557019 1.658e-08 au
q 2.864845837382665 1.2774e-07 au
i 23.51972189696668 5.2873e-06 deg
node 322.1821348316445 9.6122e-06 deg
peri 320.3462022486306 2.8199e-05 deg
M 103.073871519443 2.8166e-05 deg
tp 2458405.297045281259
(2018-Oct-13.79704528)
0.00016221 TDB
period 2078.830071482547
5.69
1.6219e-05
4.441e-08
d
yr
n .1731743276848313 1.3511e-09 deg/d
Q 3.510597223731374 1.8259e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2359  
   data-arc span      36490 days (99.90 yr)  
   first obs. used      1920-03-10  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38554  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:49:29  

Additional Information
 Earth MOID = 1.87946 au 
 Jupiter MOID = 1.87384 au 
 T_jup = 3.060 
[ 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 9.5   n/a MPO502165 IRAS observations used: 17
diameter diameter 79.190 km 0.694 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.6080 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Oey, J.; Vilagi, J.; Gajdos, S.; Kornos, L.; Galad, A. (2007) Minor Planet Bull. 34, 81-83.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.047   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.750   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.12 deg.
U-B UB 0.290   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.12 deg.
Tholen spectral type spec_T PDC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1241 Dysona (1932 EB1)          Discovered 1932-Mar-04 by Wood, H. E. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1908-Apr-13 10:33 00:02 Jupiter 1.90449467220207 1.904493975472 1.90449536893386 6.53830054630253 6.46992083399286 2418044.939703741 2.00077211107823 344.113515240198 33.0774176514835 88.5472213158547 4238752.49018394 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:49:41 2020-Feb-22 15:49
1919-Jun-16 11:47 00:02 Jupiter 1.94086468782211 1.94086375271226 1.94086562302232 6.20702917518872 6.13631657649389 2422125.991255859 1.84491745167206 849.539415623052 27.9862009971633 -87.4504593547554 3781911.2171129 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:49:41 2020-Feb-22 15:49
2050-Oct-25 23:19 < 00:01 Jupiter 1.92635252530424 1.9263519714273 1.92635307918151 6.57364253551805 6.50640996797105 2470105.471190332 0.798400926765426 209.465639391038 26.5104351836597 -88.2392278565053 4423881.19450944 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:49:41 2020-Feb-22 15:49
2061-Dec-31 12:32 00:01 Jupiter 1.88636248228891 1.88636187021038 1.88636309438031 6.36563982670521 6.29470586170171 2474190.022473334 1.09365236989536 411.051233961937 23.3502228417252 -87.3176692986548 4031900.46438518 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:49:41 2020-Feb-22 15:49
2193-May-13 13:30 00:04 Jupiter 1.99229015036898 1.99228775391191 1.99229254683907 6.57489629066655 6.5099125088786 2522170.062634405 3.61106244274583 342.757183288304 73.1289552224064 73.6127570838604 3623841.35540436 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:49:41 2020-Feb-22 15:49

Alternate Designations
 1932 EB1 = 1931 AA1 = 1945 RA = 1948 CE = 1956 PB = A908 DC = A920 EB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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