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74735 (1999 RB180)
Classification: Main-belt Asteroid          SPK-ID: 2074735
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 .1501665181409211 5.0443e-08  
a 2.359731072163163 1.1794e-08 au
q 2.005378473307478 1.2338e-07 au
i 5.576512200905951 4.7839e-06 deg
node 66.3576425436455 4.9922e-05 deg
peri 314.8369268743135 5.2418e-05 deg
M 233.3154150123506 1.9571e-05 deg
tp 2459466.422266522537
(2021-Sep-08.92226652)
7.4249e-05 TDB
period 1324.012830483407
3.62
9.9258e-06
2.718e-08
d
yr
n .2719006883555361 2.0384e-09 deg/d
Q 2.714083671018847 1.3565e-08 au
  Orbit Determination Parameters
   # obs. used (total)      717  
   data-arc span      7583 days (20.76 yr)  
   first obs. used      1999-09-09  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5497  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:50:25  

Additional Information
 Earth MOID = 1.01326 au 
 Jupiter MOID = 2.74297 au 
 T_jup = 3.530 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457248.5 (2015-Aug-14.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1491132420615459 5.0308e-08  
q 2.008987064180025 1.2286e-07 au
tp 2456818.549762120060
(2014-Jun-10.04976212)
6.3705e-05 TDB
node 66.4138207204399 4.9943e-05 deg
peri 314.9534598683329 5.2488e-05 deg
i 5.574407443296433 4.7807e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      717  
   data-arc span      7583 days (20.76 yr)  
   first obs. used      1999-09-09  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5497  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:50:25  

Additional Information
 Jupiter MOID = 2.74297 au 
 T_jup = 3.530 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.530904096196759E-15 -6.163341707718284E-15 -7.23943377474522E-13 1.721306098759499E-14 -1.864238800047979E-13 -3.205555680035402E-16
q -6.163341707718284E-15 1.509456145547196E-14 1.99550927457333E-12 -4.044672855825524E-14 5.153630492573371E-13 9.046687634298294E-16
tp -7.23943377474522E-13 1.99550927457333E-12 4.058377029774435E-9 2.112065270199997E-12 1.054749397674668E-9 2.904761939534394E-12
node 1.721306098759499E-14 -4.044672855825524E-14 2.112065270199997E-12 2.49428229546619E-9 -2.481175922225673E-9 -5.272052123155045E-11
peri -1.864238800047979E-13 5.153630492573371E-13 1.054749397674668E-9 -2.481175922225673E-9 2.755036088969021E-9 5.321273109219817E-11
i -3.205555680035402E-16 9.046687634298294E-16 2.904761939534394E-12 -5.272052123155045E-11 5.321273109219817E-11 2.285553990499447E-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 15.8   n/a MPO432300  
diameter diameter 1.729 km 0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.283   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74735 (1999 RB180)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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