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 ]  
19084 Eilestam (1978 RQ9)
Classification: Main-belt Asteroid          SPK-ID: 2019084
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06016122825758786 3.1393e-08  
a 2.310847208288008 6.9632e-09 au
q 2.171823801921783 7.0486e-08 au
i 6.739338385602945 4.3458e-06 deg
node 349.7712105137456 2.605e-05 deg
peri 233.3600124031701 4.7086e-05 deg
M 122.8571393714363 3.9197e-05 deg
tp 2458762.621953654817
(2019-Oct-06.12195365)
0.00013988 TDB
period 1283.0845442989
3.51
5.7994e-06
1.588e-08
d
yr
n .2805738730152895 1.2682e-09 deg/d
Q 2.449870614654233 7.3821e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2311  
   data-arc span      15480 days (42.38 yr)  
   first obs. used      1978-09-02  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44163  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:45:19  

Additional Information
 Earth MOID = 1.17069 au 
 Jupiter MOID = 2.5338 au 
 T_jup = 3.573 
[ 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 13.98   n/a E2021B10  
diameter diameter 3.711 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 43.293 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.425   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19084 Eilestam           Discovered 1978 Sept. 2 by C.-I. Lagerkvist at the European Southern Observatory.
Olle Eilestam (b. 1966) is an entertainer and piano player with a large repertoire of different music.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-05-29Last Updated: 2018-09-17

[ show close-approach data ]
Alternate Designations
 1978 RQ9 = 1978 RH16 = 1992 PW5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-18 00:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin