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JPL Small-Body Database Browser
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48820 (1997 WW33)
Classification: Main-belt Asteroid          SPK-ID: 2048820
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1469936393444251 3.8274e-08  
a 3.107581273951079 1.7037e-08 au
q 2.650786592934425 1.2178e-07 au
i .460038658413892 4.7458e-06 deg
node 13.24181931969296 0.00053204 deg
peri 76.23840340818852 0.00053231 deg
M 304.5306217639752 1.5901e-05 deg
tp 2458908.806703430994
(2020-Feb-29.30670343)
8.8952e-05 TDB
period 2000.931266308568
5.48
1.6455e-05
4.505e-08
d
yr
n .1799162250406275 1.4796e-09 deg/d
Q 3.564375954967733 1.9541e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      10278 days (28.14 yr)  
   first obs. used      1991-10-08  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54294  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:38:12  

Additional Information
 Earth MOID = 1.66736 au 
 Jupiter MOID = 1.63603 au 
 T_jup = 3.203 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456637.5 (2013-Dec-11.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1449847233963273 3.8569e-08  
q 2.657105321532114 1.2242e-07 au
tp 2456912.843547466224
(2014-Sep-12.34354747)
8.7613e-05 TDB
node 13.19289308524803 0.00052987 deg
peri 77.28442500678197 0.00053015 deg
i .4623659557224511 4.7397e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      10278 days (28.14 yr)  
   first obs. used      1991-10-08  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54294  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:38:12  

Additional Information
 Jupiter MOID = 1.63603 au 
 T_jup = 3.203 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.487596061983625E-15 -4.688061223443295E-15 -1.986753803771251E-13 6.785700626130514E-15 -5.029960469557202E-14 -1.929852380576969E-16
q -4.688061223443295E-15 1.498551125719968E-14 6.320033883093083E-13 -2.651316279618096E-14 1.585784237787474E-13 6.805270936514881E-16
tp -1.986753803771251E-13 6.320033883093083E-13 7.676039588945886E-9 1.095891130064871E-11 1.511207474931905E-9 -1.354567689819715E-13
node 6.785700626130514E-15 -2.651316279618096E-14 1.095891130064871E-11 2.807665547957767E-7 -2.807555304578642E-7 1.028714629812622E-10
peri -5.029960469557202E-14 1.585784237787474E-13 1.511207474931905E-9 -2.807555304578642E-7 2.810570209080619E-7 -1.02890955887615E-10
i -1.929852380576969E-16 6.805270936514881E-16 -1.354567689819715E-13 1.028714629812622E-10 -1.02890955887615E-10 2.246437224286294E-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 14.4   n/a MPO452835  
diameter diameter 7.548 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.55 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.045   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48820 (1997 WW33)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WW33 = 1999 FB48 = 2001 NB3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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