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66488 (1999 RD44)
Classification: Main-belt Asteroid          SPK-ID: 2066488
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03322847351760461 4.3635e-08  
a 2.58639167636479 1.2459e-08 au
q 2.50044982904055 1.1648e-07 au
i 14.79862301556178 5.0251e-06 deg
node 358.1350221748212 1.3217e-05 deg
peri 223.1281484757245 6.7103e-05 deg
M 183.3682154980335 6.8358e-05 deg
tp 2459945.928895619028
(2023-Jan-01.42889562)
0.0002909 TDB
period 1519.287161025442
4.16
1.0978e-05
3.006e-08
d
yr
n .2369532299325285 1.7121e-09 deg/d
Q 2.67233352368903 1.2873e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1643  
   data-arc span      10758 days (29.45 yr)  
   first obs. used      1991-10-05  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:01:55  

Additional Information
 Earth MOID = 1.51067 au 
 Jupiter MOID = 2.30923 au 
 T_jup = 3.374 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.46   n/a E2021B10  
diameter diameter 3.550 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.222   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66488 (1999 RD44)          Discovered 1999-Sep-15 by Billings, G. W. at Calgary
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RD44 = 2000 XB38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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