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JPL Small-Body Database Browser
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27097 (1998 UM26)
Classification: Main-belt Asteroid          SPK-ID: 2027097
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1691400429083479 3.5346e-08  
a 2.2551883309188 6.6976e-09 au
q 1.873745679860789 7.8786e-08 au
i 4.930830632044813 3.9467e-06 deg
node 126.5142922222829 4.8245e-05 deg
peri 170.1423468831465 4.993e-05 deg
M 101.4369454939268 1.3788e-05 deg
tp 2458251.949016322710
(2018-May-13.44901632)
4.6941e-05 TDB
period 1237.008404707307
3.39
5.5106e-06
1.509e-08
d
yr
n .2910247000990917 1.2965e-09 deg/d
Q 2.636630981976812 7.8305e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1908  
   data-arc span      10266 days (28.11 yr)  
   first obs. used      1991-09-15  
   last obs. used      2019-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46551  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:57:30  

Additional Information
 Earth MOID = .857386 au 
 Jupiter MOID = 2.55899 au 
 T_jup = 3.600 
[ 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 14.5   n/a MPO449161  
diameter diameter 3.239 km 0.629 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.651 h n/a LCDB (Rev. 2019-January); 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:
[Warner, B.D. (2017) Minor Planet Bull. 44, 289-294.]
geometric albedo albedo 0.321   0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27097 (1998 UM26)          Discovered 1998-Oct-18 by Elst, E. W. at La Silla
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 UM26 = 1991 RB17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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