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JPL Small-Body Database Browser
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1501 Baade (1938 UJ)
Classification: Main-belt Asteroid          SPK-ID: 2001501
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2398126222421465 4.7598e-08  
a 2.545301782607576 6.6125e-09 au
q 1.934906287722843 1.2354e-07 au
i 7.298693307989573 4.9539e-06 deg
node 16.88953336312121 2.4482e-05 deg
peri 14.15801268440871 2.6065e-05 deg
M 27.32764834852997 9.9124e-06 deg
tp 2458887.908110060691
(2020-Feb-08.40811006)
4.0571e-05 TDB
period 1483.226066919573
4.06
5.78e-06
1.582e-08
d
yr
n .2427141809526469 9.4583e-10 deg/d
Q 3.155697277492308 8.1982e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2599  
   data-arc span      32579 days (89.20 yr)  
   first obs. used      1930-11-24  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:56:28  

Additional Information
 Earth MOID = .941174 au 
 Jupiter MOID = 2.30195 au 
 T_jup = 3.391 
[ show covariance matrix ]

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 11.9   n/a MPO435710  
diameter diameter 10.798 km 0.388 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.132 h n/a LCDB (Rev. 2019-August); 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:
[Ivarsen, K.; Willis, S.; Ingleby, L.; Matthews, D.; Simet, M. (2004) Minor Planet Bull. 31, 29-33.]
[Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm]
geometric albedo albedo 0.263   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1501 Baade (1938 UJ)          Discovered 1938-Oct-20 by Wachmann, A. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1938 UJ = 1930 UH1 = 1930 WJ = 1930 XH = 1934 VG = 1950 RD = 1970 QA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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