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JPL Small-Body Database Browser
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1451 Grano (1938 DT)
Classification: Main-belt Asteroid          SPK-ID: 2001451
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1173715178977164 3.2178e-08  
a 2.203143704000694 4.9493e-09 au
q 1.944557383315336 7.1283e-08 au
i 5.108530907525544 3.6962e-06 deg
node 175.2734547796931 3.6317e-05 deg
peri 52.1366176794042 3.9267e-05 deg
M 2.016836069704379 1.4212e-05 deg
tp 2458993.808387797315
(2020-May-24.30838780)
4.7155e-05 TDB
period 1194.435397677047
3.27
4.0249e-06
1.102e-08
d
yr
n .3013976316342704 1.0156e-09 deg/d
Q 2.461730024686053 5.5302e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2571  
   data-arc span      21591 days (59.11 yr)  
   first obs. used      1961-03-17  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48429  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:24:41  

Additional Information
 Earth MOID = .940235 au 
 Jupiter MOID = 2.5193 au 
 T_jup = 3.649 
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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 13.1   n/a MPO425814  
diameter diameter 6.170 km 0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 138.00 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D. (2010) Minor Planet Bull. 37, 159-161.]
geometric albedo albedo 0.429   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1451 Grano (1938 DT)          Discovered 1938-Feb-22 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1938 DT = 1976 WK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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