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434 Hungaria (A898 RB)
Classification: Inner Main-belt Asteroid          SPK-ID: 2000434
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 69 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07383877344468488 3.9047e-08  
a 1.944392258384883 3.3523e-09 au
q 1.800820718930402 7.6158e-08 au
i 22.50907337333102 4.4139e-06 deg
node 175.3048879442563 1.0357e-05 deg
peri 123.8685129005237 2.8774e-05 deg
M 10.04525962417705 2.781e-05 deg
tp 2458972.866689514099
(2020-May-03.36668951)
7.6479e-05 TDB
period 990.3170397887321
2.71
2.5611e-06
7.012e-09
d
yr
n .3635199492041458 9.4012e-10 deg/d
Q 2.087963797839364 3.5999e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2587  
   data-arc span      44422 days (121.62 yr)  
   first obs. used      1898-09-11  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37931  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:05:24  

Additional Information
 Earth MOID = .834577 au 
 Jupiter MOID = 3.07265 au 
 T_jup = 3.802 
[ 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 11.2   n/a MPO473767  
diameter diameter 8.934 km 0.748 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 26.521 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J. (2006) IAU 2006, poster paper.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2010) Minor Planet Bull. 37, 24-27.]
[Warner, B.D. (2011) Minor Planet Bull. 38, 142-149.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 144-155.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.726   0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.717   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=8.90, mean=18.56, max.=28.25) deg.
U-B UB 0.247   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=8.90, mean=16.94, max.=24.74) deg.
Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xe   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

434 Hungaria (A898 RB)          Discovered 1898-Sep-11 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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