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49280 (1998 UT22)
Classification: Main-belt Asteroid          SPK-ID: 2049280
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160591976590782 4.6084e-08  
a 2.543949311308005 9.716e-09 au
q 2.135411463058294 1.1865e-07 au
i 14.08502144104788 3.5915e-06 deg
node 70.94553945019838 2.1149e-05 deg
peri 315.6499856420251 2.4578e-05 deg
M 126.8563891105912 1.4008e-05 deg
tp 2458478.259014951659
(2018-Dec-25.75901495)
5.6324e-05 TDB
period 1482.044033694683
4.06
8.4905e-06
2.325e-08
d
yr
n .242907762397945 1.3916e-09 deg/d
Q 2.952487159557716 1.1276e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1524  
   data-arc span      7859 days (21.52 yr)  
   first obs. used      1998-10-28  
   last obs. used      2020-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49096  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:33:26  

Additional Information
 Earth MOID = 1.16465 au 
 Jupiter MOID = 2.50922 au 
 T_jup = 3.384 
[ 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 14.8   n/a MPO452840  
diameter diameter 3.580 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 40.5357 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.199   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49280 (1998 UT22)          Discovered 1998-Oct-28 by Broughton, J. at Reedy Creek
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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