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4957 Brucemurray (1990 XJ)
Classification: Amor [NEO]          SPK-ID: 2004957
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .218791417637999 2.3896e-07  
a 1.565492768282205 1.7411e-08 au
q 1.222976386207706 3.846e-07 au
i 35.01082596088146 1.1634e-05 deg
node 254.9001691395878 1.8083e-05 deg
peri 97.46013175965335 7.4149e-05 deg
M 65.36832363710067 0.00012656 deg
tp 2458870.590810743648
(2020-Jan-22.09081074)
0.0002495 TDB
period 715.442978038117
1.96
1.1936e-05
3.268e-08
d
yr
n .5031847555303284 8.3946e-09 deg/d
Q 1.908009150356704 2.1221e-08 au
  Orbit Determination Parameters
   # obs. used (total)      539  
   data-arc span      16381 days (44.85 yr)  
   first obs. used      1976-03-11  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52441  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-16 06:03:18  

Additional Information
 Earth MOID = .425695 au 
 Jupiter MOID = 3.60337 au 
 T_jup = 4.201 
[ 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 14.9   n/a MPO267727  
diameter diameter 3.499 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2012ApJ...760L..12M)  
rotation period rot_per 2.892 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Sarounova, L.; Wolf, M. (1996) Icarus 124, 471-482.]
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) Icarus 136, 124-153.]
[Kaasalainen, M.; et al. (2004) Icarus 167, 178-196.]
geometric albedo albedo 0.132   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2012ApJ...760L..12M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4957 Brucemurray (1990 XJ)          Discovered 1990-Dec-15 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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