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1648 Shajna (1935 RF)
Classification: Main-belt Asteroid          SPK-ID: 2001648
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 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2062200781080879 3.1057e-08  
a 2.236151401308091 5.3635e-09 au
q 1.775012084668827 7.0128e-08 au
i 4.57236358132822 3.4678e-06 deg
node 130.3989073625201 4.6154e-05 deg
peri 134.6947159812239 4.6974e-05 deg
M 185.7702677800016 9.9683e-06 deg
tp 2459591.612307972968
(2022-Jan-12.11230797)
3.4745e-05 TDB
period 1221.378395976452
3.34
4.3943e-06
1.203e-08
d
yr
n .2947489501909781 1.0605e-09 deg/d
Q 2.697290717947356 6.4696e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3021  
   data-arc span      36389 days (99.63 yr)  
   first obs. used      1921-04-01  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43578  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:01:54  

Additional Information
 Earth MOID = .762791 au 
 Jupiter MOID = 2.39517 au 
 T_jup = 3.606 
[ 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 12.1   n/a MPO502169  
diameter diameter 9.450 km 0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.4156 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Skiff, B.A. (2018) Posting on CALL web site: http://www.minorplanet.info/call.html]
geometric albedo albedo 0.191   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.792   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.91 deg.
U-B UB 0.497   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.91 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

1648 Shajna (1935 RF)          Discovered 1935-Sep-05 by Shajn, P. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1935 RF = 1934 CK1 = 1938 MC = 1941 FD = 1948 LC = 1951 EX2 = 1952 SX = 1952 UW = 1955 QT = 1955 RP = A921 GB = A924 EQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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