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344074 (1997 UH9)
Classification: Aten [NEO]          SPK-ID: 2344074
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4747234886312335 1.7914e-07  
a .830031916674194 3.7648e-09 au
q .4359962695153513 1.5029e-07 au
i 25.4925286173311 1.9126e-05 deg
node 42.40911059721691 9.4023e-06 deg
peri 180.9115566029909 3.1553e-05 deg
M 321.2162079847915 4.0247e-05 deg
tp 2458630.256947844567
(2019-May-26.75694784)
3.0742e-05 TDB
period 276.2107743317966
0.76
1.8793e-06
5.145e-09
d
yr
n 1.303352488225358 8.8676e-09 deg/d
Q 1.224067563833037 5.5521e-09 au
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      8070 days (22.09 yr)  
   first obs. used      1997-10-29  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55804  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 22:55:38  

Additional Information
 Earth MOID = .223291 au 
 Jupiter MOID = 3.75584 au 
 T_jup = 6.903 
[ 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 18.7   n/a MPO242126  
SMASSII spectral type spec_B Sq   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)

344074 (1997 UH9)          Discovered 1997-Oct-29 by NEAT at Haleakala
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

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