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 ]  
18042 (1999 RF27)
Classification: Main-belt Asteroid          SPK-ID: 2018042
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2505950270111365 2.4729e-08  
a 2.610727491466725 1.0104e-08 au
q 1.956492165223905 6.1585e-08 au
i 8.038277551559615 6.3095e-07 deg
node 140.4380639261714 2.6539e-06 deg
peri 71.16990090415101 5.5541e-06 deg
M 161.43478502342 6.3406e-06 deg
tp 2458509.567916906272
(2019-Jan-26.06791691)
2.4274e-05 TDB
period 1540.780383098085
4.22
8.9449e-06
2.449e-08
d
yr
n .2336478345318358 1.3564e-09 deg/d
Q 3.264962817709546 1.2636e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2039  
   data-arc span      25570 days (70.01 yr)  
   first obs. used      1951-02-04  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4866  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:20:57  

Additional Information
 Earth MOID = .968288 au 
 Jupiter MOID = 1.7518 au 
 T_jup = 3.351 
[ 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 13.42   n/a E2021B10  
diameter diameter 7.556 km 2.455 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 7.2998 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.135   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

18042 (1999 RF27)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RF27 = 1989 ET11 = 1998 MR26 
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-22 15:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin