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3259 Brownlee (1984 SZ4)
Classification: Main-belt Asteroid          SPK-ID: 2003259
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1225398823522344 1.4054e-08  
a 3.16522209279372 1.6662e-08 au
q 2.777356149924084 4.2777e-08 au
i 15.48040332544033 4.8237e-07 deg
node 242.4837198329098 3.1514e-06 deg
peri 314.613065581941 1.2167e-05 deg
M 25.32481681999615 9.6554e-06 deg
tp 2459251.806666777046
(2021-Feb-06.30666678)
5.4887e-05 TDB
period 2056.859890853552
5.63
1.6242e-05
4.447e-08
d
yr
n .1750240750966309 1.3821e-09 deg/d
Q 3.553088035663355 1.8704e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2911  
   data-arc span      24505 days (67.09 yr)  
   first obs. used      1954-05-24  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40871  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:20:40  

Additional Information
 Earth MOID = 1.79666 au 
 Jupiter MOID = 1.54821 au 
 T_jup = 3.136 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457004.5 (2014-Dec-13.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1243829945918336 1.4142e-08  
q 2.772943144409005 4.3179e-08 au
tp 2457190.593713135270
(2015-Jun-17.09371314)
5.2183e-05 TDB
node 242.542200608806 3.1519e-06 deg
peri 314.0107074470893 1.1967e-05 deg
i 15.4785693197535 4.8193e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2911  
   data-arc span      24505 days (67.09 yr)  
   first obs. used      1954-05-24  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40871  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:20:40  

Additional Information
 Jupiter MOID = 1.54821 au 
 T_jup = 3.136 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.000046002401534E-16 -5.778676919984408E-16 -3.560216944738777E-13 5.525392633826823E-15 -7.716062025920047E-14 -2.482341258724456E-15
q -5.778676919984408E-16 1.86440230544025E-15 1.09111421809608E-12 -1.733429810070406E-14 2.36285995401779E-13 7.86422093434875E-15
tp -3.560216944738777E-13 1.09111421809608E-12 2.723112526278498E-9 -1.717479559993933E-11 6.033022084415065E-10 5.659473670867758E-12
node 5.525392633826823E-15 -1.733429810070406E-14 -1.717479559993933E-11 9.934390141389594E-12 -1.326048672357148E-11 -9.102839776997163E-13
peri -7.716062025920047E-14 2.36285995401779E-13 6.033022084415065E-10 -1.326048672357148E-11 1.432112396921159E-10 2.158544965998091E-12
i -2.482341258724456E-15 7.86422093434875E-15 5.659473670867758E-12 -9.102839776997163E-13 2.158544965998091E-12 2.322589175193108E-13

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 10.25   n/a MPCxxxxx  
diameter diameter 25.579 km 0.639 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.25 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[De Sanctis, M.C.; Barucci, M.A.; Angeli, C.A.; Fulchignoni, M.; et al. (1994) Planet. Space Sci. 42, 859-864.]
[Carbo, L.; Green, D.; Kragh, K.; Krotz, J.; et al. (2009) Minor Planet Bull. 36, 152-157.]
geometric albedo albedo 0.303   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3259 Brownlee (1984 SZ4)          Discovered 1984-Sep-25 by Platt, J. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1984 SZ4 = 1934 XE = 1937 JJ = 1937 KD = 1943 MC = 1948 JA = 1951 XX = 1954 KF = 1956 TO = 1965 JG = 1973 SQ5 = 1976 KA = 1978 RE1 = 1979 VH3 = 1979 XX1 = 1979 YC2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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