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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1669949188432249 4.2306e-08  
a 4.000051378469711 2.6651e-08 au
q 3.332063123153432 1.6417e-07 au
i 3.332706990672417 4.3587e-06 deg
node 49.86737369348791 7.5792e-05 deg
peri 307.4032633538009 7.6789e-05 deg
M 109.3617209551384 1.2587e-05 deg
tp 2458112.813497468688
(2017-Dec-25.31349747)
9.8912e-05 TDB
period 2922.111485812871
8.00
2.9203e-05
7.995e-08
d
yr
n .1231985849095198 1.2312e-09 deg/d
Q 4.66803963378599 3.1101e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2791  
   data-arc span      35049 days (95.96 yr)  
   first obs. used      1924-11-29  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45826  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:59:06  

Additional Information
 Earth MOID = 2.3297 au 
 Jupiter MOID = .79276 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 9.558 h n/a LCDB (Rev. 2020-October); 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.]
[Warner, B.D.; Stephens, R.D. (2020) Minor Planet Bull. 47, 196-199.]
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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1916-May-27 16:16 00:02 Jupiter 1.8373870440799 1.83738655708677 1.83738753107313 4.8939667779414 4.79884620276626 2421011.177937972 1.7252972353536 70.6629246213768 21.0779636818697 -83.3213436834754 4276270.46399375 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
1939-Feb-28 14:25 00:02 Jupiter 1.82038224244963 1.82038179124272 1.82038269365653 4.68512422869679 4.58473450837677 2429323.100670934 1.57010852978593 64.5452602900547 20.6995600332952 -88.783259345621 4290387.82645621 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
1962-Jan-16 12:49 00:01 Jupiter 1.71060257539426 1.71060210862732 1.7106030421612 3.92872489976555 3.80059978178841 2437681.033797862 1.37363746696792 50.4542930704905 19.1133450087421 83.6163552677084 3496968.45145382 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
1985-Apr-13 12:17 < 00:01 Jupiter 1.60587165801596 1.60587111440198 1.60587220162986 3.34915156507217 3.18777498324017 2446169.011723339 0.95227803360702 45.6899809337377 19.7890538507641 81.5735561825885 2745281.75067664 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
2009-Feb-06 02:06 < 00:01 Jupiter 1.57753934843716 1.57753879187704 1.57753990499719 3.34626413958264 3.18176537495233 2454868.587723486 0.380650348484168 43.672751437638 20.8738914691738 82.3316805069325 2785810.62462274 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
2033-May-22 09:07 < 00:01 Jupiter 1.60240921556096 1.60240865876184 1.60240977235998 3.67683291966811 3.53014362921836 2463739.879915162 0.887214815599687 45.6849957861812 22.1942500328289 81.987182157893 2859892.74971422 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
2057-Nov-03 11:16 00:02 Jupiter 1.59645963166738 1.59645909668106 1.59646016665371 3.82785028136172 3.68663961432577 2472670.969526503 1.55612200717896 59.0106477531558 22.6584125464415 88.5597231356993 3095259.60582751 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
2082-Mar-05 13:14 00:02 Jupiter 1.54916033211783 1.54915978794337 1.54916087629229 3.6568527886458 3.50414720778884 2481559.051246479 1.98777408430412 71.8989500140565 22.0684668041734 -86.001718274283 3056308.71840065 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
2106-Feb-02 06:50 00:02 Jupiter 1.55582255081977 1.55582200327176 1.55582309836778 3.61667397776493 3.46287288262099 2490292.784662024 1.99962131228139 72.7077086541693 22.077279624102 -86.1870628598949 3046613.46974322 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
2129-Jun-10 03:24 00:02 Jupiter 1.65097627749907 1.65097565534666 1.65097689965148 3.99434523201896 3.86376849623232 2498821.641570265 1.73804062163528 67.973291028936 27.0503367001927 89.3563741111632 2819727.71207376 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
2152-May-14 16:23 00:02 Jupiter 1.79117040832215 1.79116975434136 1.79117106230294 4.50826384152216 4.40212078395651 2507196.182734628 1.61079143250493 58.4860452155923 29.3855112407198 86.0817133223074 2876932.39957387 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
2175-Feb-13 15:54 00:02 Jupiter 1.85979985744388 1.85979939511539 1.85980031977248 4.53767670969887 4.43617346478616 2515506.162702649 1.65543598970517 48.4354208506795 19.8637174890435 81.438564168723 4105454.09698961 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59
2197-Nov-13 19:29 00:02 Jupiter 1.79856617999653 1.79856579515911 1.79856656483394 3.96080552789248 3.8400643257362 2523815.311462082 1.74187857244661 46.0144203564694 12.4524248827136 77.2972177277311 3962388.06201191 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 01:59:13 2020-Dec-18 01:59

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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