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15287 (1991 RX25)
Classification: Main-belt Asteroid          SPK-ID: 2015287
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2034181010499388 3.5712e-08  
a 2.162823420963989 8.1182e-09 au
q 1.722865987765162 8.06e-08 au
i 5.05631281539202 3.9865e-06 deg
node 90.53103992879042 3.6246e-05 deg
peri 253.1115793495422 3.7732e-05 deg
M 23.3155681237907 1.3768e-05 deg
tp 2458925.255714235247
(2020-Mar-16.75571424)
4.4181e-05 TDB
period 1161.796389926749
3.18
6.5413e-06
1.791e-08
d
yr
n .309864966978162 1.7446e-09 deg/d
Q 2.602780854162816 9.7696e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1962  
   data-arc span      11209 days (30.69 yr)  
   first obs. used      1988-12-11  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51057  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:19:42  

Additional Information
 Earth MOID = .723344 au 
 Jupiter MOID = 2.80728 au 
 T_jup = 3.663 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456658.5 (2014-Jan-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .203133800541717 3.5587e-08  
q 1.723532794837425 8.0334e-08 au
tp 2456600.646555471430
(2013-Nov-04.14655547)
3.8223e-05 TDB
node 90.59671768543583 3.6205e-05 deg
peri 252.918089516545 3.7714e-05 deg
i 5.058791521240862 3.9887e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1962  
   data-arc span      11209 days (30.69 yr)  
   first obs. used      1988-12-11  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51057  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:19:42  

Additional Information
 Jupiter MOID = 2.80728 au 
 T_jup = 3.663 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.266456755097929E-15 -2.851784568464094E-15 -5.135562206082519E-13 2.446938709058587E-16 -1.147011569809963E-13 5.14945402535184E-16
q -2.851784568464094E-15 6.453592114954928E-15 1.195610743711454E-12 -3.29907157777301E-16 2.694255680988387E-13 -1.010308976903136E-15
tp -5.135562206082519E-13 1.195610743711454E-12 1.460964152184276E-9 1.875348763753976E-14 4.098932679121905E-10 2.022742829767244E-13
node 2.446938709058587E-16 -3.29907157777301E-16 1.875348763753976E-14 1.31080542785226E-9 -1.305327287656028E-9 -2.414462110543671E-12
peri -1.147011569809963E-13 2.694255680988387E-13 4.098932679121905E-10 -1.305327287656028E-9 1.422310039202079E-9 2.49145381472226E-12
i 5.14945402535184E-16 -1.010308976903136E-15 2.022742829767244E-13 -2.414462110543671E-12 2.49145381472226E-12 1.590957416021114E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO337388  
diameter diameter 2.835 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.505   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15287 (1991 RX25)          Discovered 1991-Sep-12 by Holt, H. E. at Palomar
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 RX25 = 1988 XA2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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