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1180 Rita (1931 GE)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001180
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1569155934280387 1.7576e-08  
a 3.996900038792684 2.5882e-08 au
q 3.36972409733298 7.6875e-08 au
i 7.186449818394984 1.3032e-06 deg
node 88.22986613235487 3.8342e-06 deg
peri 206.4584936882348 6.8851e-06 deg
M 24.49175385748001 8.639e-06 deg
tp 2459001.935895062940
(2020-Jun-01.43589506)
6.9224e-05 TDB
period 2918.658998179911
7.99
2.835e-05
7.762e-08
d
yr
n .1233443167648217 1.1981e-09 deg/d
Q 4.624075980252389 2.9943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3664  
   data-arc span      41528 days (113.70 yr)  
   first obs. used      1907-04-04  
   last obs. used      2020-12-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41943  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:06:07  

Additional Information
 Earth MOID = 2.35383 au 
 Jupiter MOID = .591795 au 
 T_jup = 3.019 
[ 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 9.27   n/a E2021B10  
diameter diameter 97 km n/a J.G. Williams (E-mail September 1990) based on assumed albedo of 0.048 for C-type
rotation period rot_per 14.849 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Gonano, M.; Di Martino, M.; Mottola, S.; Neukum, G. (1991) Adv. Space Res. 11, no. 12, 197-200.]
[Dahlgren, M.; Lahulla, J.F.; Lagerkvist, C.-I.; Lagerros, J.; et al. (1998) Icarus 133, 247-285.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D., Stephens, R.D. (2018) Minor Planet Bull. 45, 390-393.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.058   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
B-V BV 0.682   0.042 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=7.65, mean=13.11, max.=16.19) deg.
U-B UB 0.216   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.65, mean=11.92, max.=16.19) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1180 Rita (1931 GE)          Discovered 1931-Apr-09 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
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
1901-Feb-11 23:23 < 00:01 Jupiter 1.91803369545377 1.91803346612355 1.9180339247841 4.79184581974577 4.69878353664583 2415427.474537603 0.645326540308944 18.7894393626587 8.44051309752605 -66.1172204134248 11000969.5429585 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
1924-Jun-29 05:21 00:01 Jupiter 1.87261272993446 1.87261255544892 1.87261290442 4.49975765939583 4.39808782475605 2423965.723119544 1.12418132586412 27.1374804266026 7.69116196935918 87.879521621566 10093848.7359046 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
1948-Feb-21 03:59 00:01 Jupiter 1.8391804667188 1.83918022230238 1.83918071113532 4.37871709182665 4.2722448989941 2432602.665989611 1.36322643080797 32.8568362535087 7.97887279943004 78.1039464733807 8905299.63899094 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
1972-Jan-18 13:11 00:01 Jupiter 1.83246812459729 1.83246788439094 1.83246836480375 4.45066175820519 4.34556431843617 2441335.049055516 1.16276928755959 30.282587273187 8.02824974939452 76.7655953445083 9407780.88295226 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
1996-Feb-15 12:01 < 00:01 Jupiter 1.83700106480186 1.83700085337568 1.83700127622803 4.57392459732728 4.47198016088706 2450129.000416112 0.62551303001195 18.6241158670418 7.64136371176783 70.4569757869319 10324590.5441927 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
2020-Mar-21 15:49 < 00:01 Jupiter 1.82007105142791 1.82007082320534 1.82007127965047 4.58507762275053 4.48243005237665 2458930.159023410 0.288927391060239 10.4986708254542 9.74145216159951 14.1823736974798 8806822.53072137 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
2044-Mar-09 14:42 < 00:01 Jupiter 1.81861502574318 1.81861472430095 1.81861532718551 4.57469897837309 4.47172985814442 2467684.112415209 0.86682357014056 29.7267383734145 10.1235781258197 -70.1452791543017 8227067.86210964 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
2067-Nov-29 03:56 00:01 Jupiter 1.83047780009624 1.83047746829761 1.83047813189498 4.61019602799276 4.50870728554626 2476348.663652222 1.24831032416844 41.0800647876086 9.88792414134402 -72.98776907918 8430930.38387512 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
2091-May-10 21:42 00:01 Jupiter 1.87911676113276 1.87911653369416 1.87911698857137 4.76979196890175 4.67433461699704 2484912.404417302 1.22005046333651 35.6591057042748 9.02662695821474 -80.8261839199639 9683912.51921128 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
2114-Aug-05 12:58 < 00:01 Jupiter 1.93671404001849 1.93671384750106 1.93671423253593 4.89962797755523 4.80953778156147 2493399.040235693 0.891007300812 21.5093874953089 7.77021448245448 78.1804794019223 11257753.0058866 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
2137-Sep-23 01:15 < 00:01 Jupiter 1.95887039670724 1.95887014192712 1.95887065148737 4.8192401309548 4.7286645410995 2501848.551777884 0.530839145683076 13.1587802474503 7.57292451527998 33.7670915019103 8315065.47347266 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
2160-Nov-17 16:28 < 00:01 Jupiter 1.9391221326061 1.93912192581009 1.93912233940211 4.53204537714216 4.4346162064475 2510305.186316736 0.639792314058943 11.3021483183162 9.42355496337742 -74.3625812184138 10678382.5640279 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07
2184-Mar-01 02:16 00:01 Jupiter 1.89274278137391 1.8927426188762 1.89274294387172 4.18912941688803 4.08090480347428 2518809.594574090 1.03915417997146 17.7192447978006 5.27895742874787 -75.766065578171 11434770.7371835 T 48 CATAB v2.0f-lin.ifort 2021-Apr-12 12:07:50 2021-Apr-12 12:07

Alternate Designations
 1931 GE = 1929 CM = 1953 AH = 1957 UF1 = A907 GG = A908 KA = A916 LA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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