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373 Melusina (A893 RA)
Classification: Main-belt Asteroid          SPK-ID: 2000373
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 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379382969853175 2.279e-08  
a 3.120022524596638 1.0304e-08 au
q 2.689651930997946 6.8943e-08 au
i 15.37840570350588 9.5566e-07 deg
node 3.644597235172692 1.3272e-06 deg
peri 348.6980759174598 7.2919e-06 deg
M 52.67239549855246 5.7193e-06 deg
tp 2458905.979458480841
(2020-Feb-26.47945848)
3.1655e-05 TDB
period 2012.959424824544
5.51
9.9721e-06
2.73e-08
d
yr
n .178841160711115 8.8597e-10 deg/d
Q 3.550393118195329 1.1726e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3421  
   data-arc span      43453 days (118.97 yr)  
   first obs. used      1902-04-04  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:18:11  

Additional Information
 Earth MOID = 1.68512 au 
 Jupiter MOID = 1.90076 au 
 T_jup = 3.147 
[ 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 9.18   n/a E2021B10 IRAS observations used: 18
diameter diameter 98.695 km 0.947 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 12.97 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Ivarsen, K.; Willis, S.; Ingleby, L.; Matthews, D.; Simet, M. (2004) Minor Planet Bull. 31, 29-33.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.040   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.669   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.06, mean=14.28, max.=21.50) deg.
U-B UB 0.371   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.06, mean=14.28, max.=21.50) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

373 Melusina (A893 RA)          Discovered 1893-Sep-15 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
1956-Oct-17 02:37 < 00:01 Jupiter 1.89891909755714 1.89891885847057 1.89891933664436 4.2067037102308 4.09929822584946 2435763.608952128 0.759759379733161 195.437420114752 10.5199631632811 -89.1555699171764 8134002.17480201 T 53 CATAB v2.0g-lin.ifort 2021-May-03 18:19:35 2021-May-03 18:19
2028-Aug-11 05:02 < 00:01 Jupiter 1.90898354130071 1.9089833872122 1.90898369540637 4.30777229247559 4.20350987858935 2461994.709804347 0.26286262783618 412.537061533569 4.41152132100787 89.3063779562716 10781157.6711333 T 53 CATAB v2.0g-lin.ifort 2021-May-03 18:19:35 2021-May-03 18:19
2110-Oct-16 13:53 00:01 Jupiter 1.9093931536225 1.90939268291458 1.90939362435288 4.1859630687705 4.07861132734216 2492010.078290037 1.37568588857595 351.223554739628 6.45369488182292 -86.3178438865597 9080110.92888008 T 53 CATAB v2.0g-lin.ifort 2021-May-03 18:19:35 2021-May-03 18:19
2182-Aug-11 17:36 00:02 Jupiter 1.89248788382138 1.89248765787236 1.89248810977415 4.29863938630929 4.19322772664152 2518242.233282859 2.29970423229179 1606.48902100032 10.6476004984441 -89.9875408742296 10062432.823223 T 53 CATAB v2.0g-lin.ifort 2021-May-03 18:19:35 2021-May-03 18:19

Alternate Designations
 A893 RA = 1937 TL = 1948 TZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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