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20560 (1999 RX118)
Classification: Main-belt Asteroid          SPK-ID: 2020560
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2483248104810201 4.4322e-08  
a 2.694824294389306 1.1254e-08 au
q 2.025632562205433 1.2114e-07 au
i 12.02631509210628 4.9691e-06 deg
node 195.7926373666549 1.5534e-05 deg
peri 202.2196469345092 1.6635e-05 deg
M 248.6998996425095 6.6963e-06 deg
tp 2459700.059431792751
(2022-Apr-30.55943179)
3.1556e-05 TDB
period 1615.824198430626
4.42
1.0122e-05
2.771e-08
d
yr
n .2227965148372273 1.3956e-09 deg/d
Q 3.36401602657318 1.4049e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1826  
   data-arc span      23706 days (64.90 yr)  
   first obs. used      1955-10-11  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45671  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:23:52  

Additional Information
 Earth MOID = 1.03617 au 
 Jupiter MOID = 2.08883 au 
 T_jup = 3.294 
[ 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 13.73   n/a E2021B10  
diameter diameter 10.923 km 2.975 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 462.236 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.059   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

20560 (1999 RX118)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RX118 = 1955 TM = 1986 RX10 = 1998 KB49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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