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20577 (1999 RM148)
Classification: Main-belt Asteroid          SPK-ID: 2020577
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05204191414501597 2.6838e-08  
a 2.776790091184875 1.2343e-08 au
q 2.6322806196607 7.228e-08 au
i 4.532651912110651 4.3465e-06 deg
node 183.7615382074825 3.7071e-05 deg
peri 246.0224270328467 6.1663e-05 deg
M 128.6818695331037 4.7215e-05 deg
tp 2458596.373530808924
(2019-Apr-22.87353081)
0.0002228 TDB
period 1690.102340740694
4.63
1.1269e-05
3.085e-08
d
yr
n .2130048526187051 1.4202e-09 deg/d
Q 2.921299562709049 1.2985e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1968  
   data-arc span      14379 days (39.37 yr)  
   first obs. used      1981-10-24  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46436  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:24:12  

Additional Information
 Earth MOID = 1.64955 au 
 Jupiter MOID = 2.22912 au 
 T_jup = 3.328 
[ 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 14.07   n/a E2021B10  
diameter diameter 10.794 km 0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.041   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20577 (1999 RM148)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RM148 = 1981 UO16 = 1997 EA42 = 1998 KC40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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