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JPL Small-Body Database Browser
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1531 Hartmut (1938 SH)
Classification: Main-belt Asteroid          SPK-ID: 2001531
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1534065959130536 4.1986e-08  
a 2.627489915222457 8.3263e-09 au
q 2.224415631532302 1.121e-07 au
i 12.41276826883428 4.0922e-06 deg
node 278.8683306655886 2.1269e-05 deg
peri 143.3550472539968 2.6357e-05 deg
M 17.89664207524376 1.4119e-05 deg
tp 2458923.164470161957
(2020-Mar-14.66447016)
6.0942e-05 TDB
period 1555.643266744841
4.26
7.3946e-06
2.025e-08
d
yr
n .2314155228873868 1.1e-09 deg/d
Q 3.030564198912612 9.6037e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2279  
   data-arc span      29726 days (81.39 yr)  
   first obs. used      1938-09-17  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44151  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:57:26  

Additional Information
 Earth MOID = 1.25094 au 
 Jupiter MOID = 2.28115 au 
 T_jup = 3.352 
[ 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 11.6   n/a MPO416722  
diameter diameter 10.481 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 25.57 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:
[Aznar, A.; Garceran, A.C.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 174-181.]
[Klinglesmith III, D.A.; Hendrickx, S.; Madden, K.; Montgomery, S. (2016) Minor Planet Bull. 43, 123-128.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.275   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1531 Hartmut (1938 SH)          Discovered 1938-Sep-17 by Bohrmann, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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