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46897 (1998 RP55)
Classification: Main-belt Asteroid          SPK-ID: 2046897
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .005842724684467292 4.0495e-08  
a 2.557400584729107 1.2084e-08 au
q 2.542458397204639 1.0441e-07 au
i 4.694978856852674 4.3727e-06 deg
node 296.4069521399797 4.69e-05 deg
peri 13.73577152625158 0.00034187 deg
M 161.3625748901349 0.00033861 deg
tp 2458330.928620493200
(2018-Jul-31.42862049)
0.0014042 TDB
period 1493.81414362386
4.09
1.0588e-05
2.899e-08
d
yr
n .2409938355026363 1.7081e-09 deg/d
Q 2.572342772253575 1.2155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1002  
   data-arc span      7822 days (21.42 yr)  
   first obs. used      1998-08-28  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57745  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:37:01  

Additional Information
 Earth MOID = 1.52698 au 
 Jupiter MOID = 2.43158 au 
 T_jup = 3.432 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456772.5 (2014-Apr-25.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .007182905486672253 4.0463e-08  
q 2.539033212486671 1.046e-07 au
tp 2456820.575769417238
(2014-Jun-12.07576942)
0.0011431 TDB
node 296.5340739521334 4.688e-05 deg
peri 9.581279561399063 0.00028004 deg
i 4.695871865395592 4.3745e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1002  
   data-arc span      7822 days (21.42 yr)  
   first obs. used      1998-08-28  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57745  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:37:01  

Additional Information
 Jupiter MOID = 2.43158 au 
 T_jup = 3.432 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.637273391026218E-15 -4.204669928235432E-15 3.60686930037578E-12 1.811865500209958E-14 8.206670849946123E-13 -1.220470325031221E-16
q -4.204669928235432E-15 1.094195369425952E-14 -6.825862525573352E-12 -4.569082576910709E-14 -1.523070138040592E-12 6.022547244166405E-16
tp 3.60686930037578E-12 -6.825862525573352E-12 1.306586047027074E-6 -4.516680044215663E-11 3.155967402294839E-7 1.180535054679882E-11
node 1.811865500209958E-14 -4.569082576910709E-14 -4.516680044215663E-11 2.197730051901185E-9 -2.201205686837595E-9 3.830976194876495E-11
peri 8.206670849946123E-13 -1.523070138040592E-12 3.155967402294839E-7 -2.201205686837595E-9 7.842220699253783E-8 -3.532870448800911E-11
i -1.220470325031221E-16 6.022547244166405E-16 1.180535054679882E-11 3.830976194876495E-11 -3.532870448800911E-11 1.91360300181022E-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 15.0   n/a MPO359052  
diameter diameter 3.080 km 0.644 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.245   0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46897 (1998 RP55)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 RP55 = 2000 AL54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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