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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 ]

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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456591.5 (2013-Oct-26.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1581649521728897 1.7098e-08  
q 3.355478747979785 7.4667e-08 au
tp 2456116.569240763604
(2012-Jul-08.06924076)
6.4183e-05 TDB
node 88.34390347578672 3.8285e-06 deg
peri 209.4945351201094 6.7104e-06 deg
i 7.199086021419539 1.3074e-06 deg
  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
 Jupiter MOID = .591795 au 
 T_jup = 3.019 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.923380878038365E-16 -1.231943248444956E-15 3.527274411919264E-13 -1.171294546703491E-14 2.541549257700135E-14 5.072923187631362E-15
q -1.231943248444956E-15 5.57521831259235E-15 -1.461814085353684E-12 4.554137531461303E-14 -8.354382148788765E-14 -2.017374997786772E-14
tp 3.527274411919264E-13 -1.461814085353684E-12 4.11944447427663E-9 4.032327152005127E-11 3.53331561393397E-10 -1.434693511157498E-11
node -1.171294546703491E-14 4.554137531461303E-14 4.032327152005127E-11 1.465738761459957E-11 -9.726324722474225E-12 -4.093335560751342E-12
peri 2.541549257700135E-14 -8.354382148788765E-14 3.53331561393397E-10 -9.726324722474225E-12 4.502881401643457E-11 2.341870485652932E-12
i 5.072923187631362E-15 -2.017374997786772E-14 -1.434693511157498E-11 -4.093335560751342E-12 2.341870485652932E-12 1.709366599211117E-12

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

[ show close-approach data ]
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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