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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 
[ 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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1944-Jul-10 01:01 00:04 Thisb 0.0480980687848373 0.0480968853172855 0.0480992546617292 3.95944144178203 3.95944140597954 2431281.542411588 4.13720245845874 662.585729166128 34.38307273377 85.8395111209854 208600.333763837 T 18 CATAB v2.0f-lin.ifort 2020-Jun-23 23:50:42 2020-Jun-23 23:50
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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