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1998 Titius (1938 DX1)
Classification: Main-belt Asteroid          SPK-ID: 2001998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06325482744088672 1.553e-08  
a 2.418793178543104 5.775e-09 au
q 2.265792833419166 3.8896e-08 au
i 7.625330200076863 6.0548e-07 deg
node 351.7401351721142 3.6976e-06 deg
peri 246.9599333678131 8.1632e-06 deg
M 340.5452271570354 8.7088e-06 deg
tp 2459470.754058029210
(2021-Sep-13.25405803)
3.3336e-05 TDB
period 1374.030995184944
3.76
4.9209e-06
1.347e-08
d
yr
n .2620028232707691 9.3833e-10 deg/d
Q 2.571793523667042 6.1403e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3982  
   data-arc span      30437 days (83.33 yr)  
   first obs. used      1938-02-25  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:01:55  

Additional Information
 Earth MOID = 1.26786 au 
 Jupiter MOID = 2.43776 au 
 T_jup = 3.500 
[ 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 12.35   n/a E2021B10  
diameter diameter 14.242 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.13 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2002) Minor Planet Bull. 29, 47-48.]
[Stephens R.D. (2017) Minor Planet Bull. 44, 321-323.]
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.126   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Xc   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)

1998 Titius (1938 DX1)          Discovered 1938-Feb-24 by Bohrmann, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1938 DX1 = 1966 TF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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