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15914 (1997 UM3)
Classification: Main-belt Asteroid          SPK-ID: 2015914
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2007669974696083 1.5644e-08  
a 2.379074413925336 6.0991e-09 au
q 1.901434787084778 3.7995e-08 au
i 2.018610883317696 3.1775e-07 deg
node 348.5215355798881 1.1321e-05 deg
peri 64.0612859557769 1.3395e-05 deg
M 154.9894417692878 3.8894e-06 deg
tp 2458819.454472004830
(2019-Dec-01.95447200)
1.3652e-05 TDB
period 1340.326074517325
3.67
5.1541e-06
1.411e-08
d
yr
n .2685913576139614 1.0329e-09 deg/d
Q 2.856714040765894 7.3236e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2307  
   data-arc span      15135 days (41.44 yr)  
   first obs. used      1980-01-22  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47097  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:05:10  

Additional Information
 Earth MOID = .913007 au 
 Jupiter MOID = 2.51642 au 
 T_jup = 3.511 
[ 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 14.21   n/a MPO636303  
diameter diameter 4.627 km 0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.8 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:
[Galad, A. (2009) Minor Planet Bull. 36, 183-186.]
geometric albedo albedo 0.273   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15914 (1997 UM3)          Discovered 1997-Oct-26 by Kobayashi, T. at Oizumi
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 UM3 = 1975 XU1 = 1980 BY4 = 1993 QT10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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