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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1469936400431634 3.8219e-08  
a 3.107581275017907 1.6737e-08 au
q 2.65078659167305 1.2173e-07 au
i .460038555233416 4.6745e-06 deg
node 13.241828710146 0.00052854 deg
peri 76.23839479599748 0.00052881 deg
M 304.5306207272334 1.5609e-05 deg
tp 2458908.806709352115
(2020-Feb-29.30670935)
8.7247e-05 TDB
period 2000.931267338943
5.48
1.6165e-05
4.426e-08
d
yr
n .17991622494798 1.4535e-09 deg/d
Q 3.564375958362764 1.9197e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1072  
   data-arc span      10284 days (28.16 yr)  
   first obs. used      1991-10-08  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5364  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:14:51  

Additional Information
 Earth MOID = 1.66736 au 
 Jupiter MOID = 1.63603 au 
 T_jup = 3.203 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456676.5 (2014-Jan-19.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1450004129434716 3.8502e-08  
q 2.657038413617971 1.2235e-07 au
tp 2456912.876533764810
(2014-Sep-12.37653376)
8.6437e-05 TDB
node 13.19285437759333 0.00052642 deg
peri 77.29372612352661 0.00052669 deg
i .462365058402832 4.6682e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1072  
   data-arc span      10284 days (28.16 yr)  
   first obs. used      1991-10-08  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5364  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:14:51  

Additional Information
 Jupiter MOID = 1.63603 au 
 T_jup = 3.203 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.482410556839166E-15 -4.678607906948936E-15 -2.294981393311628E-13 7.450994639536014E-15 -5.580140565696725E-14 -1.989919412844042E-16
q -4.678607906948936E-15 1.496962800610033E-14 6.887328576765383E-13 -2.810211731015476E-14 1.690619140502364E-13 6.972097743862681E-16
tp -2.294981393311628E-13 6.887328576765383E-13 7.471376511420274E-9 1.077742243231798E-11 1.478957910642421E-9 -1.147612818066564E-13
node 7.450994639536014E-15 -2.810211731015476E-14 1.077742243231798E-11 2.771192251358414E-7 -2.77108397272981E-7 1.522887509111627E-10
peri -5.580140565696725E-14 1.690619140502364E-13 1.478957910642421E-9 -2.77108397272981E-7 2.774049431784646E-7 -1.523027273062669E-10
i -1.989919412844042E-16 6.972097743862681E-16 -1.147612818066564E-13 1.522887509111627E-10 -1.523027273062669E-10 2.17923449511549E-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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