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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 | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2078100993459412 1.101e-08  
a 2.234770550488851 4.2042e-09 au
q 1.770362660376379 2.5428e-08 au
i 5.986440249708232 8.3663e-07 deg
node 97.79276606979855 7.7899e-06 deg
peri 258.9028080171772 8.2314e-06 deg
M 57.48655843985886 5.6985e-06 deg
tp 2459005.644959311285
(2020-Jun-05.14495931)
1.9113e-05 TDB
period 1220.24724651632
3.34
3.4434e-06
9.428e-09
d
yr
n .2950221777002676 8.3253e-10 deg/d
Q 2.699178440601322 5.0779e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3054  
   data-arc span      32960 days (90.24 yr)  
   first obs. used      1930-12-17  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43852  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:13:45  

Additional Information
 Earth MOID = .776184 au 
 Jupiter MOID = 2.76038 au 
 T_jup = 3.603 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457073.5 (2015-Feb-20.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2078168474962549 1.0957e-08  
q 1.770920054752747 2.5324e-08 au
tp 2456565.570106736291
(2013-Sep-30.07010674)
1.7896e-05 TDB
node 97.83292082009868 7.7893e-06 deg
peri 258.9918116905041 8.2363e-06 deg
i 5.985978669462838 8.3671e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3054  
   data-arc span      32960 days (90.24 yr)  
   first obs. used      1930-12-17  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43852  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:13:45  

Additional Information
 Jupiter MOID = 2.76038 au 
 T_jup = 3.603 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.200468159351369E-16 -2.751157730749893E-16 -9.616307307635906E-14 1.026652908060011E-14 -3.010867756222846E-14 -7.87357207090314E-16
q -2.751157730749893E-16 6.413118507217143E-16 2.141323218331823E-13 -2.224705806251577E-14 6.790195294538711E-14 1.714196375667699E-15
tp -9.616307307635906E-14 2.141323218331823E-13 3.202640772731529E-10 1.765217848946297E-11 5.91347324682296E-11 -1.678635636331339E-12
node 1.026652908060011E-14 -2.224705806251577E-14 1.765217848946297E-11 6.067301604046379E-11 -5.458828668034911E-11 -3.753989148233637E-12
peri -3.010867756222846E-14 6.790195294538711E-14 5.91347324682296E-11 -5.458828668034911E-11 6.783745583825848E-11 3.141978261565567E-12
i -7.87357207090314E-16 1.714196375667699E-15 -1.678635636331339E-12 -3.753989148233637E-12 3.141978261565567E-12 7.000891402128852E-13

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 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

[ show close-approach data ]
Alternate Designations
 1930 YE = 1953 XF1 = A913 VB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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