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4130 Ramanujan (1988 DQ1)
Classification: Main-belt Asteroid          SPK-ID: 2004130
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03616357545722236 1.1728e-08  
a 3.053966946215527 1.3183e-08 au
q 2.943524582112198 3.5723e-08 au
i 9.799613376653511 6.3504e-07 deg
node 175.1823982317889 2.8966e-06 deg
peri 46.84679566919514 3.1372e-05 deg
M 339.943136708296 2.8645e-05 deg
tp 2459309.106405147624
(2021-Apr-04.60640515)
0.00015505 TDB
period 1949.372904651382
5.34
1.2622e-05
3.456e-08
d
yr
n .1846747736879933 1.1957e-09 deg/d
Q 3.164409310318855 1.3659e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2864  
   data-arc span      24198 days (66.25 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:25:49  

Additional Information
 Earth MOID = 1.94602 au 
 Jupiter MOID = 1.80756 au 
 T_jup = 3.213 
[ 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 12.38   n/a MPCxxxxx  
diameter diameter 12.847 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.94164 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.095   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4130 Ramanujan (1988 DQ1)          Discovered 1988-Feb-17 by Rajamohan, R. at Kavalur
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1988 DQ1 = 1978 GU1 = 1979 OF = 1983 HU1 = 1985 PU1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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