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JPL Small-Body Database Browser
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724 Hapag (A911 UP)
Classification: Main-belt Asteroid          SPK-ID: 2000724
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2507538664076129 5.4864e-08  
a 2.454324623028949 1.0127e-08 au
q 1.838893234385033 1.3146e-07 au
i 11.71295365450648 5.4348e-06 deg
node 204.2452686716455 1.9574e-05 deg
peri 205.87410811408 2.1203e-05 deg
M 329.4514484549713 6.8033e-06 deg
tp 2458719.674834053247
(2019-Aug-24.17483405)
2.6703e-05 TDB
period 1404.418150429483
3.85
8.6921e-06
2.38e-08
d
yr
n .2563339130086782 1.5865e-09 deg/d
Q 3.069756011672865 1.2666e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1410  
   data-arc span      39453 days (108.02 yr)  
   first obs. used      1911-10-22  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50891  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:56:23  

Additional Information
 Earth MOID = .854752 au 
 Jupiter MOID = 2.35009 au 
 T_jup = 3.422 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8   n/a MPO412164  
diameter diameter 9.492 km 0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.1305 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2012) Minor Planet Bull. 39, 57-60.]
[Vander Haagen, G.A. (2012) Minor Planet Bull. 39, 48-50.]
geometric albedo albedo 0.103   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

724 Hapag (A911 UP)          Discovered 1911-Oct-21 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A911 UP = 1988 VG2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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