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4345 Rachmaninoff (1988 CM2)
Classification: Main-belt Asteroid          SPK-ID: 2004345
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03626884078386272 2.7536e-08  
a 2.90263663557116 1.0607e-08 au
q 2.797361369582223 7.9549e-08 au
i 2.862761231634476 3.097e-06 deg
node 136.2991409154863 5.5476e-05 deg
peri 349.8712687049457 7.1719e-05 deg
M 228.0771798797133 4.7104e-05 deg
tp 2459862.419021236199
(2022-Oct-09.91902124)
0.00023785 TDB
period 1806.289824821504
4.95
9.9013e-06
2.711e-08
d
yr
n .1993035641639486 1.0925e-09 deg/d
Q 3.007911901560098 1.0992e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3183  
   data-arc span      25382 days (69.49 yr)  
   first obs. used      1951-08-11  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45291  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:14:07  

Additional Information
 Earth MOID = 1.8124 au 
 Jupiter MOID = 1.9947 au 
 T_jup = 3.284 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457265.5 (2015-Aug-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03458537544422666 2.6927e-08  
q 2.804110998403902 7.7978e-08 au
tp 2458027.594921037420
(2017-Oct-01.09492104)
0.00024955 TDB
node 136.4265436392951 5.5674e-05 deg
peri 344.4451718383326 7.3857e-05 deg
i 2.857086350689693 3.0909e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3183  
   data-arc span      25382 days (69.49 yr)  
   first obs. used      1951-08-11  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45291  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:14:07  

Additional Information
 Jupiter MOID = 1.9947 au 
 T_jup = 3.284 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.250513003136176E-16 -2.081316408745896E-15 7.000536839349449E-13 -1.36518270611471E-15 1.389296908647064E-13 2.202145355756807E-16
q -2.081316408745896E-15 6.080555160974835E-15 -9.451430541023989E-13 3.503933611639801E-15 -1.99724020319308E-13 -5.331757447577989E-16
tp 7.000536839349449E-13 -9.451430541023989E-13 6.227566715409172E-8 -3.156451852202536E-11 1.211832191481032E-8 -1.723526592212008E-13
node -1.36518270611471E-15 3.503933611639801E-15 -3.156451852202536E-11 3.099631629013865E-9 -3.101726758393337E-9 4.638985024550066E-12
peri 1.389296908647064E-13 -1.99724020319308E-13 1.211832191481032E-8 -3.101726758393337E-9 5.454815672014204E-9 -4.675179354644506E-12
i 2.202145355756807E-16 -5.331757447577989E-16 -1.723526592212008E-13 4.638985024550066E-12 -4.675179354644506E-12 9.553659000848955E-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 12.63   n/a MPCxxxxx  
diameter diameter 9.506 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.484230 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.214   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4345 Rachmaninoff (1988 CM2)          Discovered 1988-Feb-11 by Elst, E. W. at La Silla
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
2146-Feb-25 00:48 < 00:01 Psych 0.0464719490626285 0.0464601397254684 0.0464837617818135 2.45361061677113 2.45361051066105 2504925.533552853 0.85424916394546 857.095091411282 38.8824423049197 46.8283464898039 130204.637722664 T 38 CATAB v2.0f-lin.ifort 2021-Apr-12 16:14:28 2021-Apr-12 16:14

Alternate Designations
 1988 CM2 = 1979 HD3 = 1981 UR19 = 1986 TJ5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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