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1270 Datura (1930 YE)
Classification: Main-belt Asteroid          SPK-ID: 2001270
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2078100993576321 1.1003e-08  
a 2.234770550497432 4.2024e-09 au
q 1.77036266035705 2.5408e-08 au
i 5.98644024977433 8.3661e-07 deg
node 97.79276606862793 7.7893e-06 deg
peri 258.9028080163782 8.23e-06 deg
M 57.48655844220439 5.6947e-06 deg
tp 2459005.644959302213
(2020-Jun-05.14495930)
1.9101e-05 TDB
period 1220.247246523348
3.34
3.442e-06
9.424e-09
d
yr
n .2950221776985683 8.3217e-10 deg/d
Q 2.699178440637814 5.0757e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3065  
   data-arc span      32970 days (90.27 yr)  
   first obs. used      1930-12-17  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43777  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:20:42  

Additional Information
 Earth MOID = .776184 au 
 Jupiter MOID = 2.76038 au 
 T_jup = 3.603 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457077.5 (2015-Feb-24.0) TDB
Reference: JPL 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .20782775664841 1.0949e-08  
q 1.770882615352462 2.5305e-08 au
tp 2456565.579695525979
(2013-Sep-30.07969553)
1.7888e-05 TDB
node 97.83238891426562 7.7889e-06 deg
peri 258.9927422641055 8.2349e-06 deg
i 5.98594522271733 8.3668e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3065  
   data-arc span      32970 days (90.27 yr)  
   first obs. used      1930-12-17  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43777  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:20:42  

Additional Information
 Jupiter MOID = 2.76038 au 
 T_jup = 3.603 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.198885150506003E-16 -2.747254301426418E-16 -9.596184966531721E-14 1.026130932191912E-14 -3.005703213827035E-14 -7.867068902796338E-16
q -2.747254301426418E-16 6.403470313314198E-16 2.136376763638712E-13 -2.223562020753343E-14 6.777582044395346E-14 1.712724901817109E-15
tp -9.596184966531721E-14 2.136376763638712E-13 3.199760761003658E-10 1.765518929207293E-11 5.906483741503143E-11 -1.679104164216284E-12
node 1.026130932191912E-14 -2.223562020753343E-14 1.765518929207293E-11 6.066620871118925E-11 -5.458115110124768E-11 -3.753452194154503E-12
peri -3.005703213827035E-14 6.777582044395346E-14 5.906483741503143E-11 -5.458115110124768E-11 6.781437519919678E-11 3.141366746187313E-12
i -7.867068902796338E-16 1.712724901817109E-15 -1.679104164216284E-12 -3.753452194154503E-12 3.141366746187313E-12 7.000390617653772E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.54   n/a E2021B10  
diameter diameter 8.203 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.359 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Szekely, P.; Kiss, L.L.; Szabo, Gy.M.; Sarneczky, K.; et al. (2005) Planet. Space Sci. 53, 925-936.]
[Takato, N. (2008) Astrophys. J. Let. 685, L161-L163.]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Vokrouhlicky, D.; Durech, J.; Michalowski, T.; Krugly, Yu.N.; et al. (2009) Astron. Astrophys. 507, 495-504.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.288   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1270 Datura (1930 YE)          Discovered 1930-Dec-17 by Van Biesbroeck, G. at Williams Bay
Independent discovery Dec. 20 by M. Wolf, Heideberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1930 YE = 1953 XF1 = A913 VB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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