Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
66606 (1999 RK194)
Classification: Main-belt Asteroid          SPK-ID: 2066606
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 .2451365371133764 4.0569e-08  
a 2.608703797807354 8.4579e-09 au
q 1.969215182458346 1.0809e-07 au
i 3.541576852583341 4.2242e-06 deg
node 223.5611524662826 5.1189e-05 deg
peri 156.1248105702178 5.1853e-05 deg
M 3.05491377998535 6.0597e-06 deg
tp 2459187.440334925307
(2020-Dec-03.94033493)
2.59e-05 TDB
period 1538.989236845823
4.21
7.4845e-06
2.049e-08
d
yr
n .2339197645968105 1.1376e-09 deg/d
Q 3.248192413156363 1.0531e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1215  
   data-arc span      15504 days (42.45 yr)  
   first obs. used      1978-10-08  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45648  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:13  

Additional Information
 Earth MOID = .971092 au 
 Jupiter MOID = 2.22075 au 
 T_jup = 3.365 
[ 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 15.33   n/a E2021B10  
rotation period rot_per 2.75 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

66606 (1999 RK194)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RK194 = 1978 TE8 = 1978 WH20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-19 18:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin