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 ]  
18375 (1991 RC27)
Classification: Main-belt Asteroid          SPK-ID: 2018375
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1773308946756616 2.0177e-08  
a 2.637306793719655 1.1701e-08 au
q 2.169630820455148 5.8083e-08 au
i 13.60668578669301 9.586e-07 deg
node 27.91411067525317 2.2465e-06 deg
peri 343.3001711906417 6.3807e-06 deg
M 298.797158015246 9.5339e-06 deg
tp 2459466.455205844310
(2021-Sep-08.95520584)
4.2391e-05 TDB
period 1564.369741650267
4.28
1.0411e-05
2.85e-08
d
yr
n .230124624898608 1.5316e-09 deg/d
Q 3.104982766984161 1.3776e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1637  
   data-arc span      24385 days (66.76 yr)  
   first obs. used      1953-11-11  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46977  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:27:51  

Additional Information
 Earth MOID = 1.17276 au 
 Jupiter MOID = 2.36338 au 
 T_jup = 3.335 
[ 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 13.59   n/a E2021B10  
diameter diameter 5.973 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.197   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18375 (1991 RC27)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RC27 = 1998 HU24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-17 22:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin