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66584 (1999 RM161)
Classification: Main-belt Asteroid          SPK-ID: 2066584
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1180904537477444 7.443e-08  
a 2.607912757151024 1.6018e-08 au
q 2.299943156324529 1.907e-07 au
i 13.98565611368544 8.1104e-06 deg
node 327.2693270106974 2.0603e-05 deg
peri 74.24393183223451 4.9633e-05 deg
M 284.7398285018417 4.002e-05 deg
tp 2459322.088653968570
(2021-Apr-17.58865397)
0.00017063 TDB
period 1538.28928534289
4.21
1.4172e-05
3.88e-08
d
yr
n .2340262026331119 2.1561e-09 deg/d
Q 2.915882357977519 1.7909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      747  
   data-arc span      7789 days (21.33 yr)  
   first obs. used      1997-01-09  
   last obs. used      2018-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56848  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:57:12  

Additional Information
 Earth MOID = 1.35038 au 
 Jupiter MOID = 2.50614 au 
 T_jup = 3.360 
[ 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 14.6   n/a MPO436246  
diameter diameter 3.588 km 1.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.06 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:
[Kim, M.-J.; Choi, Y.-J.; Moon, H.-K.; Byun, Y.-I.; et al. (2014) Astron. J. 147, A56.]
geometric albedo albedo 0.137   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66584 (1999 RM161)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RM161 = 1997 EZ25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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