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15748 (1991 RG25)
Classification: Main-belt Asteroid          SPK-ID: 2015748
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2172113123433945 3.6396e-08  
a 2.800025664866586 1.1452e-08 au
q 2.191828415605729 1.0101e-07 au
i 9.103586870598036 3.4675e-06 deg
node 91.72735214358609 2.6174e-05 deg
peri 224.1206148361252 2.7409e-05 deg
M 84.68855025023772 8.013e-06 deg
tp 2458597.909388681504
(2019-Apr-24.40938868)
3.7612e-05 TDB
period 1711.360268258362
4.69
1.0499e-05
2.874e-08
d
yr
n .2103589797409339 1.2905e-09 deg/d
Q 3.408222914127443 1.3939e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2058  
   data-arc span      15955 days (43.68 yr)  
   first obs. used      1976-05-02  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46888  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:54:53  

Additional Information
 Earth MOID = 1.18838 au 
 Jupiter MOID = 1.91382 au 
 T_jup = 3.272 
[ 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 13.3   n/a MPO365441  
diameter diameter 14.757 km 2.329 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 19.697 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.059   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

15748 (1991 RG25)          Discovered 1991-Sep-11 by Holt, H. E. at Palomar
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RG25 = 1976 JU2 = 1998 BE19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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