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JPL Small-Body Database Browser
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1202 Marina (1931 RL)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001202
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1666530905223997 4.468e-08  
a 4.000066133965874 2.7131e-08 au
q 3.333442750446474 1.7546e-07 au
i 3.333321176095949 4.9213e-06 deg
node 49.88102897653749 7.8417e-05 deg
peri 307.4014248294743 7.9496e-05 deg
M 60.11027775531738 1.2552e-05 deg
tp 2458112.583597353301
(2017-Dec-25.08359735)
0.00010035 TDB
period 2922.127654571907
8.00
2.9729e-05
8.139e-08
d
yr
n .1231979032253264 1.2534e-09 deg/d
Q 4.666689517485275 3.1652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2450  
   data-arc span      34706 days (95.02 yr)  
   first obs. used      1924-11-29  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47981  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:55:29  

Additional Information
 Earth MOID = 2.3302 au 
 Jupiter MOID = .790558 au 
 T_jup = 3.027 
[ 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 10.0   n/a MPO347524  
diameter diameter 54.93 km 2.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 9.45 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Dahlgren, M.; Lahulla, J.F.; Lagerkvist, C.-I.; Lagerros, J.; et al. (1998) Icarus 133, 247-285.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.0337   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12

1202 Marina (1931 RL)          Discovered 1931-Sep-13 by Neujmin, G. at Simeis
Independent discovery Sept. 15 by K. Reinmuth, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1931 RL = 1931 TH = 1980 BL3 = A924 WG = A924 YA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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