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15701 (1987 RG1)
Classification: Main-belt Asteroid          SPK-ID: 2015701
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839169019211907 4.1227e-08  
a 2.436706794729705 1.0237e-08 au
q 1.988555230152703 9.7886e-08 au
i 1.219012004913407 3.9402e-06 deg
node 348.5872320708233 0.00015404 deg
peri 348.5205916548333 0.00015441 deg
M 222.6096875547141 1.5203e-05 deg
tp 2459530.721029682615
(2021-Nov-12.22102968)
6.1162e-05 TDB
period 1389.323361221389
3.80
8.7555e-06
2.397e-08
d
yr
n .2591189423918669 1.633e-09 deg/d
Q 2.884858359306707 1.212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1943  
   data-arc span      17371 days (47.56 yr)  
   first obs. used      1972-10-06  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50066  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:14:15  

Additional Information
 Earth MOID = .97922 au 
 Jupiter MOID = 2.49308 au 
 T_jup = 3.480 
[ 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 14.3   n/a MPO337391  
diameter diameter 7.960 km 0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 109.416 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 0.045   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15701 (1987 RG1)          Discovered 1987-Sep-13 by Debehogne, H. at La Silla
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1987 RG1 = 1972 TV7 = 1989 AP4 = 1991 TS14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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