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JPL Small-Body Database Browser
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1198 Atlantis (1931 RA)
Classification: Mars-crossing Asteroid          SPK-ID: 2001198
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .335036357355208 2.8912e-08  
a 2.251074277710184 4.7508e-09 au
q 1.496882551570158 6.4995e-08 au
i 2.72502788931663 3.2103e-06 deg
node 259.5298494887736 7.5904e-05 deg
peri 84.53497208638701 7.6055e-05 deg
M 343.2784465857655 5.1065e-06 deg
tp 2458657.800351324905
(2019-Jun-23.30035132)
1.7606e-05 TDB
period 1233.625008751034
3.38
3.9053e-06
1.069e-08
d
yr
n .2918228776542693 9.2383e-10 deg/d
Q 3.00526600385021 6.3425e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1844  
   data-arc span      32233 days (88.25 yr)  
   first obs. used      1931-09-07  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49135  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:55:29  

Additional Information
 Earth MOID = .491807 au 
 Jupiter MOID = 2.42534 au 
 T_jup = 3.550 
[ 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 14.3   n/a MPO435707  
rotation period rot_per 16. h n/a LCDB (Rev. 2019-January); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Carbognani, A. (2014) Minor Planet Bull. 41, 4-8.]
SMASSII spectral type spec_B L   n/a Xu et al. (1995) Icarus 115, 1-35  

1198 Atlantis (1931 RA)          Discovered 1931-Sep-07 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1931 RA = 1958 RQ = 1975 TQ4 = 1975 VX6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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