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JPL Small-Body Database Browser
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297 Caecilia
Classification: Main-belt Asteroid          SPK-ID: 2000297
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402916155620768 4.125e-08  
a 3.166011038149326 1.6432e-08 au
q 2.721846234719989 1.3315e-07 au
i 7.552817471066607 4.6049e-06 deg
node 331.8874156707219 3.1274e-05 deg
peri 353.3685563720982 3.4659e-05 deg
M 2.634288801847251 1.7059e-05 deg
tp 2458985.443364084895
(2020-May-15.94336408)
9.7451e-05 TDB
period 2057.628960665537
5.63
1.6019e-05
4.386e-08
d
yr
n .1749586572126972 1.3621e-09 deg/d
Q 3.610175841578664 1.8738e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3836  
   data-arc span      43624 days (119.44 yr)  
   first obs. used      1900-05-02  
   last obs. used      2019-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39278  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:22:05  

Additional Information
 Earth MOID = 1.71021 au 
 Jupiter MOID = 1.73129 au 
 T_jup = 3.175 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455811.5 (2011-Sep-07.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1439180427784509 4.0899e-08  
q 2.707199623167231 1.3226e-07 au
tp 2454881.235052133302
(2009-Feb-18.73505213)
8.9041e-05 TDB
node 332.1386828336301 3.1287e-05 deg
peri 354.5812602000845 3.4566e-05 deg
i 7.556204783770153 4.6058e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3836  
   data-arc span      43624 days (119.44 yr)  
   first obs. used      1900-05-02  
   last obs. used      2019-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39278  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:22:05  

Additional Information
 Jupiter MOID = 1.73129 au 
 T_jup = 3.175 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.672728625260462E-15 -5.381412678578937E-15 3.356357809818061E-14 -3.511097491723933E-16 -3.632814754953684E-16 -4.662100371115965E-17
q -5.381412678578937E-15 1.749342474489776E-14 -4.566353685554306E-14 1.538799535510333E-15 2.412973785690974E-14 3.697202841345831E-16
tp 3.356357809818061E-14 -4.566353685554306E-14 7.928307000614883E-9 -4.321848150560447E-12 1.329026007029328E-9 9.488944239152968E-13
node -3.511097491723933E-16 1.538799535510333E-15 -4.321848150560447E-12 9.789010496446278E-10 -9.707200781662809E-10 -3.110209249131621E-12
peri -3.632814754953684E-16 2.412973785690974E-14 1.329026007029328E-9 -9.707200781662809E-10 1.194781090048247E-9 3.233753794045683E-12
i -4.662100371115965E-17 3.697202841345831E-16 9.488944239152968E-13 -3.110209249131621E-12 3.233753794045683E-12 2.121296487238899E-11

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 9.1   n/a MPO435697  
diameter diameter 39.48 km 1.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 4.163 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Cooney, W.R. (2005) Minor Planet Bull. 32, 15-16.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1796   0.018 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6

297 Caecilia          Discovered 1890-Sep-09 by Charlois, A. at Nice
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
1933-May-06 05:28 00:02 Jupiter 1.9552909265151 1.95529007696513 1.95529177606652 3.08576382432663 2.94203128987681 2427198.727506780 1.86120713589544 140.039285181113 28.3740413653733 -78.9675572151397 2894333.61764535 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
1944-Feb-25 20:35 00:02 Jupiter 1.78832888626793 1.78832840601455 1.78832936652141 2.90606457480824 2.73823539484837 2431146.357661316 1.52493601476443 120.422606638839 17.7806272890022 -84.9633393235071 3057285.11566636 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
1954-Dec-12 22:05 00:01 Jupiter 1.78563506646935 1.78563460658147 1.78563552635732 2.75500476187471 2.5770805057187 2435089.419829977 1.2885519332797 77.5321686857932 12.998549289321 -78.6374388459669 2959949.73841348 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
1965-Aug-29 14:59 00:01 Jupiter 1.93087730596696 1.93087678306338 1.93087782887055 3.00326675259836 2.85346569205486 2439002.124554361 1.06410069032609 44.8590480299347 13.4918490271667 -70.3115542374243 2984194.59350883 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
2051-Nov-27 11:59 < 00:01 Jupiter 1.92289477897909 1.92289426814414 1.92289528981405 2.97734023795389 2.82552084286922 2470502.999315675 0.985933008196858 112.907101830297 21.1280783649893 -86.3675759098485 3119670.98399792 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
2062-Sep-19 04:54 00:01 Jupiter 1.78080992269035 1.78080950014153 1.78081034523916 2.90034932461485 2.73143704969028 2474451.704022629 1.27111264387966 121.062205840395 14.9203135912245 -85.1795435737988 3156899.71140764 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
2073-Jul-06 09:00 00:02 Jupiter 1.80626039692915 1.80625988096824 1.80626091289047 2.85391845591798 2.6845812241825 2478394.875001044 1.66115684726428 84.644462178843 13.3886058041856 -77.0519592298327 2996817.24707631 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
2084-Mar-24 08:48 00:02 Jupiter 1.96758218939345 1.96758144724304 1.96758293154408 3.22239103362934 3.08590763738902 2482308.866707975 2.07400929845299 60.3453848547608 15.1778661397096 -65.3931155471748 2660415.8909064 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
2170-Jun-27 15:03 00:04 Jupiter 1.89963512384387 1.89963382800487 1.89963641969582 2.89050820681586 2.73189747046184 2513814.127209925 3.80161902470808 299.848209972438 26.4893394078174 -79.067118326741 2707046.98156829 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
2181-Apr-20 11:08 00:04 Jupiter 1.78156866942251 1.78156816254003 1.78156917630488 2.91286525981075 2.7447971346166 2517763.964088934 4.04211983995233 120.878083590812 21.7364174603729 -85.9700021310936 3183913.96365055 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23
2192-Feb-06 02:43 00:05 Jupiter 1.82926440537702 1.8292633530268 1.82926545773244 2.97059147610967 2.81039744508523 2521707.612943152 4.59202707251189 180.304893854635 13.8647628518092 -75.1812074155376 2862069.49035734 T 36 CATAB v2.0f-lin.ifort 2020-Jan-28 17:22:59 2020-Jan-28 17:23

Alternate Designations
 1935 PB = 1947 SB = 1955 BK1 = A924 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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