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791 Ani (A914 MB)
Classification: Main-belt Asteroid          SPK-ID: 2000791
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 59 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1929612006043273 2.2329e-08  
a 3.122654720722525 1.0906e-08 au
q 2.520103516739137 6.7635e-08 au
i 16.38103803385909 5.0307e-07 deg
node 129.8119581909369 1.8909e-06 deg
peri 201.5557745054803 4.0011e-06 deg
M 68.72715954544388 3.2516e-06 deg
tp 2458815.721967048792
(2019-Nov-28.22196705)
1.6751e-05 TDB
period 2015.507301314299
5.52
1.0559e-05
2.891e-08
d
yr
n .1786150810593672 9.3571e-10 deg/d
Q 3.725205924705914 1.301e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3468  
   data-arc span      38450 days (105.27 yr)  
   first obs. used      1915-12-06  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3908  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:26:51  

Additional Information
 Earth MOID = 1.51339 au 
 Jupiter MOID = 1.64389 au 
 T_jup = 3.125 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456248.5 (2012-Nov-17.0) TDB
Reference: JPL 59 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1970717280354599 2.2113e-08  
q 2.505229856069905 6.7203e-08 au
tp 2456803.218722107390
(2014-May-25.71872211)
1.1715e-05 TDB
node 130.0345682396889 1.889e-06 deg
peri 201.6960011235844 3.9052e-06 deg
i 16.38530247894168 5.0393e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3468  
   data-arc span      38450 days (105.27 yr)  
   first obs. used      1915-12-06  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3908  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:26:51  

Additional Information
 Jupiter MOID = 1.64389 au 
 T_jup = 3.125 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.889795385325783E-16 -1.4744392852969E-15 -9.843108499595252E-15 -3.783082055148071E-15 -3.613746294275045E-14 -3.010674898785382E-15
q -1.4744392852969E-15 4.516289974170868E-15 4.116423825769215E-14 1.182222011869678E-14 1.127892931049836E-13 9.33588315713935E-15
tp -9.843108499595252E-15 4.116423825769215E-14 1.372475861512398E-10 -3.513462568908892E-12 3.523837576250418E-11 5.625108824747208E-13
node -3.783082055148071E-15 1.182222011869678E-14 -3.513462568908892E-12 3.568192754016258E-12 -4.118515776385692E-12 6.77237324443696E-13
peri -3.613746294275045E-14 1.127892931049836E-13 3.523837576250418E-11 -4.118515776385692E-12 1.525081340776972E-11 -4.469980615750424E-13
i -3.010674898785382E-15 9.33588315713935E-15 5.625108824747208E-13 6.77237324443696E-13 -4.469980615750424E-13 2.53946576539516E-13

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 9.24   n/a MPCxxxxx IRAS observations used: 17
diameter diameter 116.865 km 1.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 11.174 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Polakis, T. (2018) Minor Planet Bull. 45, 347-352.]
geometric albedo albedo 0.026   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.708   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.27 deg.
U-B UB 0.282   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.27 deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

791 Ani (A914 MB)          Discovered 1914-Jun-29 by Neujmin, G. at Simeis
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
1956-Jul-09 11:49 < 00:01 Jupiter 1.786776357989 1.78677573825752 1.78677697772271 3.59068928876185 3.45614644498081 2435663.992175547 0.894716558525621 111.456541533875 8.6574364347825 -73.9926479218128 11351318.8691521 T 59 CATAB v2.0f-lin.ifort 2021-Apr-12 11:28:52 2021-Apr-12 11:28
1966-Nov-29 21:31 < 00:01 Jupiter 1.72485975200579 1.72485941553615 1.72486008847573 3.78773570687921 3.65579086506617 2439459.396615097 0.703116282212791 68.5834561498409 13.6384990582876 81.8383930249883 10500955.300985 T 59 CATAB v2.0f-lin.ifort 2021-Apr-12 11:28:52 2021-Apr-12 11:28
2039-Feb-04 05:06 < 00:01 Jupiter 1.67271194013189 1.67271176429613 1.67271211596765 3.72722417897125 3.58879457344585 2465823.712342368 0.421997194859114 58.6763190256433 7.84201911855808 -88.9913555871831 11626720.2272107 T 59 CATAB v2.0f-lin.ifort 2021-Apr-12 11:28:52 2021-Apr-12 11:28
2049-Jun-14 13:38 < 00:01 Jupiter 1.87702739431436 1.87702687883535 1.87702790979337 3.74089858532163 3.61826027471766 2469607.068036230 0.679072608361113 31.646075849223 20.2903312893032 -50.6689480168121 11939263.6046277 T 59 CATAB v2.0f-lin.ifort 2021-Apr-12 11:28:52 2021-Apr-12 11:28
2111-May-08 00:15 00:02 Jupiter 1.9805902322582 1.98058915517656 1.98059130934209 3.07245039739797 2.92995360369461 2492213.510218960 1.76272388160589 123.910295146977 10.4425306791335 -59.5803255536363 12805283.847627 T 59 CATAB v2.0f-lin.ifort 2021-Apr-12 11:28:52 2021-Apr-12 11:28
2121-Sep-05 23:24 00:02 Jupiter 1.65206476469692 1.65206445251407 1.65206507688479 3.82101938054067 3.6843966024956 2495987.475121487 1.66438020961239 207.935598449171 9.96768235169798 87.2839482021565 9990444.25449151 T 59 CATAB v2.0f-lin.ifort 2021-Apr-12 11:28:52 2021-Apr-12 11:28
2193-Nov-18 07:42 00:03 Jupiter 1.81778953763334 1.81778793226528 1.81779114302413 3.38640310568625 3.24588973394847 2522358.820541318 2.98272971813752 339.866720811425 9.45232027032227 -74.7878176855805 11694675.1079517 T 59 CATAB v2.0f-lin.ifort 2021-Apr-12 11:28:52 2021-Apr-12 11:28

Alternate Designations
 A914 MB = 1949 WH = 1964 PO = 1975 XM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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