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 ]  
183071 (2002 RO21)
Classification: Main-belt Asteroid          SPK-ID: 2183071
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2082638862139143 5.5898e-08  
a 2.666267969807725 1.7611e-08 au
q 2.110980640727885 1.4515e-07 au
i 3.382824370709675 5.222e-06 deg
node 116.4462694382153 9.9663e-05 deg
peri 213.6350719321734 0.0001005 deg
M 83.63046865235528 1.3747e-05 deg
tp 2458831.083618649547
(2019-Dec-13.58361865)
5.8952e-05 TDB
period 1590.208681467407
4.35
1.5755e-05
4.313e-08
d
yr
n .2263853821171448 2.243e-09 deg/d
Q 3.221555298887566 2.1279e-08 au
  Orbit Determination Parameters
   # obs. used (total)      427  
   data-arc span      10959 days (30.00 yr)  
   first obs. used      1991-01-12  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55026  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:37:26  

Additional Information
 Earth MOID = 1.09905 au 
 Jupiter MOID = 2.13934 au 
 T_jup = 3.349 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457181.5 (2015-Jun-08.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2097145816368312 5.5734e-08  
q 2.106571543438047 1.449e-07 au
tp 2457242.874129961192
(2015-Aug-08.37412996)
5.333e-05 TDB
node 116.5008292579382 9.9786e-05 deg
peri 213.8889687052637 0.00010061 deg
i 3.381719760140872 5.2199e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      427  
   data-arc span      10959 days (30.00 yr)  
   first obs. used      1991-01-12  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55026  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:37:26  

Additional Information
 Jupiter MOID = 2.13934 au 
 T_jup = 3.349 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.10626457343528E-15 -8.042286883899775E-15 5.659614763782571E-13 4.312748917132997E-14 2.178597555969352E-14 -1.590383124117728E-15
q -8.042286883899775E-15 2.099599565230411E-14 -1.364952978830035E-12 -1.125962067511512E-13 -3.401933592789615E-14 4.291403597784121E-15
tp 5.659614763782571E-13 -1.364952978830035E-12 2.844107177594523E-9 -3.769836560010463E-12 7.183145667369415E-10 -5.521309453218794E-13
node 4.312748917132997E-14 -1.125962067511512E-13 -3.769836560010463E-12 9.95717597736778E-9 -9.941355628172313E-9 5.241792333145053E-11
peri 2.178597555969352E-14 -3.401933592789615E-14 7.183145667369415E-10 -9.941355628172313E-9 1.012328208464978E-8 -5.24898022683008E-11
i -1.590383124117728E-15 4.291403597784121E-15 -5.521309453218794E-13 5.241792333145053E-11 -5.24898022683008E-11 2.724779093181249E-11

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 16.03   n/a E2021B55  
diameter diameter 4.015 km 0.691 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.039   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

183071 (2002 RO21)          Discovered 2002-Sep-04 by LONEOS at Anderson Mesa
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 2002 RO21 = 1993 NW 
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-23 18:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin