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2825 Crosby (1938 SD1)
Classification: Main-belt Asteroid          SPK-ID: 2002825
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1741346800838505 1.4245e-08  
a 2.245624580122906 5.2011e-09 au
q 1.854583462274773 3.2598e-08 au
i 3.519187550149777 8.076e-07 deg
node 329.3668803595538 8.0902e-06 deg
peri 81.98573194984488 9.3941e-06 deg
M 118.6419172692358 5.4764e-06 deg
tp 2458795.420922331559
(2019-Nov-07.92092233)
1.8351e-05 TDB
period 1229.147937905521
3.37
4.2703e-06
1.169e-08
d
yr
n .2928858186211851 1.0175e-09 deg/d
Q 2.636665697971039 6.1068e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2618  
   data-arc span      30139 days (82.52 yr)  
   first obs. used      1938-09-16  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42998  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:32:44  

Additional Information
 Earth MOID = .868335 au 
 Jupiter MOID = 2.73094 au 
 T_jup = 3.608 
[ 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 13.31   n/a MPCxxxxx  
diameter diameter 5.065 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.8135 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Aznar, A.M. (2017) Minor Planet Bull. 44, 276-279.]
[Pray, D.P.; Pravec, P.; Vrastil, V.; Hornoch, K; et al. (2017) CBET 4371.]
geometric albedo albedo 0.301   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2825 Crosby (1938 SD1)          Discovered 1938-Sep-19 by Jackson, C. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1938 SD1 = 1948 RA = 1972 XA1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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