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 ]  
86180 (1999 RG221)
Classification: Main-belt Asteroid          SPK-ID: 2086180
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2412722718272214 5.0634e-08  
a 3.110895978686679 2.9109e-08 au
q 2.360323038490777 1.6476e-07 au
i 6.841458309654535 4.7635e-06 deg
node 116.5525280593694 3.9865e-05 deg
peri 257.0584929690799 4.1314e-05 deg
M 274.7043595915534 1.5033e-05 deg
tp 2459475.344043649715
(2021-Sep-17.84404365)
8.8407e-05 TDB
period 2004.133562926732
5.49
2.813e-05
7.702e-08
d
yr
n .1796287466361647 2.5212e-09 deg/d
Q 3.861468918882581 3.6133e-08 au
  Orbit Determination Parameters
   # obs. used (total)      482  
   data-arc span      9427 days (25.81 yr)  
   first obs. used      1993-07-19  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57426  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:45:35  

Additional Information
 Earth MOID = 1.37245 au 
 Jupiter MOID = 1.65768 au 
 T_jup = 3.163 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457181.5 (2015-Jun-08.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .243112877299637 5.043e-08  
q 2.351624071781377 1.6379e-07 au
tp 2457477.420008483003
(2016-Mar-29.92000848)
7.0806e-05 TDB
node 116.600411696189 3.9923e-05 deg
peri 257.4952296247277 4.1369e-05 deg
i 6.840319138245802 4.7628e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      482  
   data-arc span      9427 days (25.81 yr)  
   first obs. used      1993-07-19  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57426  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:45:35  

Additional Information
 Jupiter MOID = 1.65768 au 
 T_jup = 3.163 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.54321369764342E-15 -8.187972811515537E-15 -1.723420388748293E-12 1.913360461903921E-14 -2.088506729958415E-13 1.213549195212262E-15
q -8.187972811515537E-15 2.682858929073385E-14 6.109889571556667E-12 -6.510117804434263E-14 7.485612375919852E-13 -3.107451469665032E-15
tp -1.723420388748293E-12 6.109889571556667E-12 5.013505957266586E-9 -3.643078927654083E-11 7.979480648420974E-10 2.031317225292046E-12
node 1.913360461903921E-14 -6.510117804434263E-14 -3.643078927654083E-11 1.593809485632681E-9 -1.587165638577569E-9 2.903179040842304E-11
peri -2.088506729958415E-13 7.485612375919852E-13 7.979480648420974E-10 -1.587165638577569E-9 1.711384189947319E-9 -2.849176551280738E-11
i 1.213549195212262E-15 -3.107451469665032E-15 2.031317225292046E-12 2.903179040842304E-11 -2.849176551280738E-11 2.268385436248497E-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 14.8   n/a MPO439618  
diameter diameter 6.591 km 0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

86180 (1999 RG221)          Discovered 1999-Sep-05 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-28 17:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin